We did an online order and pickup at their ofallon il location. We showed up and there was only one worker. He was expected to serve cook and host. We left without our order. read more

There's nothing like a good Denny's breakfast after a long night of drinking! I came here with a horrible hangover so I needed some good food to help shake off my hangover symptoms. As I walked in I was greeted right away, I was offered a table but I was solo so I decided to sit at the counter top table near the kitchen. Service was fast and I they took my order at a timely manner. The coffee I ordered was nice and hot! Yum! Denny's has so many great breakfast options, I decided to ordered the southwest skillet. It came out nice and sizzling. I love the sound of a sizzling hot skillet! So satisfying! It came with potatoes, onions and peppers and delicious chorizo and cheddar cheese. It was a little spicy so just a heads up if you don't like a little spice in your life. I added hot sauce, the spicier the better! It came with eggs on top and you can choose how you want your eggs. Definitely helped kick my nasty hangover. I would recommend for sure. read more

Denny's - Southwestern skillet - American Near Me - O'Fallon, Illinois

For quite a few years, our family had an odd tradition of stopping here for 1:00 am breakfast after a late night in St Louis. It used to be good... someplace we used to look forward to visiting. Good food, good service, etc. Then one day, we got assigned to a very poor server with a horrible attitude. Food was still decent. Now the food quality has gone downhill as well. Low quality breakfast meats, all served cold. Service is so-so; I estimate that half the people who work there visibly show customers they hate their jobs. read more

Kayla, Jennifer and Ciara are wonderful servers. So nice to be greeted with smiles. The food looked good. It tasted even better. They are getting ready for memorial day. They have red white and blue everywhere. I love coming to this dennys I feel like its my other home. All-american Slam read more

The food was outstanding. It came out pretty quickly, though we did come in after 8PM Everyone from hostess to waitress was very attentive and polite. By far the best experience we mmm have had at Dennys in a while. read more

food was great, service was great, Kim was a great manager! very friendly atmosphere, will come back time and time again!

We ordered late 2 nights in a row. Other places said no but this Denny's accepted our orders and got everything right. We esp appreciate it because we had just returned from visiting my hospitalized husband read more

I honestly dont go to places like Dennys with high expectations but somehow they still managed to disappoint. Service was mediocre at best. No silverware no napkins no refills..Our server seemed to be avoiding us. My wife ordered eggs for her skillet 3 times and they never came out right. The 1st time The server didnt bother to ask what kind of eggs she wanted. My meal I ordered jalapenos and pepper Jack cheese I had neither in my omelet... I really could have made a better breakfast at home read more

I haven't been in awhile because of the service and this visit is my last. I was waiting to be seated when two people entered and they were asked if they wanted a table or booth. When it happened a second time I left. There are so many other places that are better. read more

Kim is always a pleasure great company, fast friendly service, good food. ​ Kim​ alone makes this the only Denny's I patronize.

The food was wonderful and just how we ordered it. Service from Kimberly K was great and the place was very clean!

Waitress is walking around vaping and the food well let's just say I'm not impressed. The bacon is old and tough. We only come here once a year every year on this day but today is a little disappointing. Happy Thanksgiving read more

The food was great and the service was excellent. my waitress name is Erika and one of my arms is in a sling. Not only did she take care of me but she actually cut my pancakes for me. Thank you Erika! read more

We always enjoy our breakfast spent at the O'Fallon, Il location. Kim is one of the best servers we have ever had. Always there with a smile on her face and a non stop positive attitude! Wonderful service from wonderful people. Would refer this location to any of my friends. read more

We came to eat breakfast on June 10th. Although Alecia did not service our table, she did have to deal with many challenges from a table next to us. Each of the 4 people at that table were very difficult to deal with and no one could make them happy foodwise. It was very frustrating to watch your girls try to make them happy. As we left to check out, I told Alecia she should get a gold medal for dealing with that table, she was beyond professional and did an exceptional job dealing with very difficult people!! Hats off to her! read more

Get seated but never get served. This I thought was something like a one time thing. I have been here three times in a row and I am sitting here know about to leave after never been served. read more

great service, great food every time we go. Our server Jennifer M. including all the staff was very courteous, fast and spot on thank you!!!

I haven't been to Denny's in forever and twenty years. They definitely updated the interior to look more modern and appealing to the eye. Even though the parking lot was packed, I was able to get seated immediately as I walked through the door. Waitress gave me just enough time before coming over to get my order. The interior along with the prices have changed. I don't remember their prices being this high, but I also don't remember ever having to pay for my own meal either. I ordered All American Slam. Three eggs, two sausage, two bacon, hash browns and choice of bread (substituted the hash browns for grits). My meal was cooked just as I asked. As I waited for my food I noticed the staff working as a team. I normally don't see that in chain restaurants. At the end of the day... yes, I would come back! read more

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When they remodeled this location they should have hired a completely new staff. First, food was cold, sloppy manager did not care. Managers should look the part and tuck in their shirts and maybe have customer skills. My husbands waffle was stone cold, my omelette has sat under the light. Manager offered to put in microwave. I asked if he knew what happened to eggs when you microwave them, he just shrugged his shoulders. No offer to re fire. My sons hammy sandwich was just sad. No offers of refills. We had to wave the waitress down for coffee. It seems as if no one cares at all. The cashier was rude. When you spend over 40.00 for breakfast it should be at least hot. We will not be back or do I recommend this location. read more

Iced tea is a rip of. Denny needs to do better. We all know it's not expensive. Service was good. Clean.

Amazing customer service! Was greeted at the door, less than a 10 minute wait to be seated(during the morning rush), and the food was excellent! Will definitely be coming back! read more

Poor service that night. We waited to be seated. We asked for our bacon not to be burnt. But it was. Then the waitress was like I'll eat it. I don't know why they sending it back. I should of taken a picture. The second set was just as bad as the fast. read more

Denny's - My husband plate. With the manager cooking and cursing. Cause he didn't get it right. He said "here's their shit" - American Near Me - O'Fallon, Illinois

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The food was mediocre. I ordered the Grand Slam Slugger with a side of grits. My meal consisted of pancakes, sausage, bacon, hash browns and the side of grits. The pancakes were probably the best part of the meal. None of it looked very appealing- the grits were the worst part of my meal. They were the only thing I felt I needed to take a picture of so y'all can see what they try to pass off as grits here. It looked like a bowl of grainy soup with so much melted butter in it. The hostess wasn't really doing her job, there was one man there doing a majority of the work- Stacey. He was nice and polite. He was taking care of about 5 or 6 tables himself while the other waitresses stood around and chatted with one another. Stacey's service deserves 5 stars. The restaurant itself deserves 0. read more

Denny's - Grits - American Near Me - O'Fallon, Illinois

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This location in O'fallon, Illinois is the absolute worst at filling orders accurately. Today's order is the second time they incorrectly filled my order. Last weekend they forgot the toast and this weekend certain toppings on the pancakes were missing. So, in a way the company stole from us by not providing what we paid for in advance. And, to make things worst, their attendants were not pleasant because of being understaff to meet the volume of customer orders both online and outside dining. But, in my opinion, customers should not have to put up with inadequate staff and poor service. It is a business which should work to better their situation rather than complain and burden the paying customers. To the owner of this establishment: I implore you to work with your staff to gain improvements for the sake of your customers and the well being of your employees. Do not use the coronavirus pandemic as an excuse but rather a challenge to overcome. read more

Shana S. has been our server the last two times that we have been in. She is FABULOUS!! She took wonderful care of us! Food came out quickly and was hot and delicious! We will be back to see her again soon! Great job O'Fallon , IL Denny's!! read more

Food was good and our server, Bree was very nice!

I try to come here often because I always liked Denny's. There was a man here and on the receipt it says his name is James F. This guy made me sweet tea and he's always pretty cool. The guy in the back never ruins the eggs ever! Staff is pretty humble. Denny's is good. James is good. It's all good :-D read more

My family favorite sever is Erika. Because she knows what we like she will have are drink order ready before we sit down at the table because she knows what we like to drink. She is a very sweet person & funny as well , she has great costumer service & an awesome personality. We love her she works for store#7522 she is real aw perso. read more

Yah, the food is not top end but you chose to eat there. I've never had a bad experience here. The food is out quick. Mary who waits on me is always attentive filling my coffee or tea. everyone is polite and professional. I will be back soon and often! read more

Ordered our to go, t-bone dinner for myself and berry vanilla crepe breakfast for wife. Steak was gray and rubbery and the crepes was raw. Thought hey maybe off night. Few months go buy tried to call an order in, because the online system never works, and for an hour and a half no answer. read more

this denny s will be closed soon if the cook we had doesn t get some supervision soon .. he can t cook worth a shit.. was at 1128 when we left.. .. for what its worth i won t eat there again.. and that folks is how you lose your business read more

Ordered on-line and I received a confirmation it would be ready in 20 minutes. I gave it a little longer because it was lunch time, however, it seemed like they missed the order and tried to make it as I was waiting. I got back to work to pass out the food and my co-worker and I noticed that our sandwiches were missing ingredients. Come to find out, they made regular club sandwiches, instead of the Cali-Club sandwiches that we ordered and paid for. Such a shame because I was just praising how good Denny's had been lately, but I usually order from the one in Belleville. read more

Great service and great food. During a time like this during the covid outbreak it's nice to find a restaurant who's all has trouble with Staffing like most is able to still produce great food and produce great service. I would suggest coming to this location for a really good meal read more

This Denny's in particular is so dirty and greasy it is unbelievable. I thought the renovation a while ago would have helped give the motivation to the staff to keep the place clean, but nope. The glass windows and doors always have greasy handprints. The menus feel slimy. There are always floaters in the drinks- every glass is unclean. The staff could use a bath too and the shaggy hair waiter is always wiping snots from his nose. I love Denny's and I have given this location so many chances thinking it was just a fluke. Just going to go to another restaurant for Sunday breakfast. read more

After waiting almost an hour for something that barely resembled what I ordered I will never go back to this Denny's again. I ordered a Grand Slamwich, something I've gotten a dozen times before, and this was like the cook had no idea what a Grand Slamwich was. Not to mention the constant bickering and b**ching between the kitchen and wait staff was horrible. read more

Over charged by almost $7.00. Am being told that they cannot refund me the money. That we are supposed to come back tomorrow or another day when the General Manager was there? Had to argue with the "manager" in the store to call the G.M. and get us our refund. This wasn't our fault. My wife showed the lady at the register that the order was rung up wrong when she went to pay. The lady then supposedly fixed it and still managed to overcharge us. This was the waitress who rang the order in and then the person who checked us out fault but we get treated like we did something wrong? I shouldn't have had to ask you to call the GM for my refund. You overcharged me. I shouldn't have to come back to the store in order to get my money back. Horrible customer service. Wish there was negative. read more

Poor service and the restaurant smells really bad... we walked in and walked straight out because of the smell

Horrible experience. After an hour we left without ever getting our food. The restaurant was only 25% full when our party of three arrived. It took a fair amount of time to be seated. Once seated it took ten minutes for the server to take our drink order. We placed our food order at that time since a fair amount of time had already passed. We ordered nothing complicated two grand slams and a sandwich. The server came by only once with someone's salad that was not ours. After the hour we finally left after notifying the manager that we could not wait any longer. The manager showed no concern nor any interest in what our issue was for leaving. Poorly operated restaurant and I would think twice before you spend your money here. read more

Came here last night after a school play and a horrible experience at Steak n Shake. The server was outstanding and after dinner we told the manager how horrible Steak n Shake was and they gave us 20% off our bill here at Denny's saying "what a rough night, least I can do" thank you Denny's and Thank you to the manager the evening of April 10th 2015 sorry I didn't get your name to mention you specifically! read more

I love going out for breakfast. I was visiting from out of state and it was may last day in town, so my sister and I decided to go to breakfast. Next time I'll know we shouldn't go here. I know there are better places to go, but we were going to be right near here, so that's why we decided to go. The hostess was very nice, and probably the highlight of the entire place. The waitress was slow and very unkempt, almost looking like she'd just rolled out of bed. I'm wondering if there is a coffee shortage because my sister only ever got the first cup and was never offered a second. I ordered a lemonade iced tea and the waitress seemed confused. That's exactly how it's listed on the menu, so instead of calling it an Arnold Palmer, I went with how it was listed. The food was mediocre at best. My sausage were cold - cooked, but like they'd been sitting too long. And actually, when she brought it out, the bacon was on my plate and the sausage on my sisters. And it looked like they'd originally had it the other way around and had switched them before bringing them out. The multigrain pancakes my sister had tasted sour. Can't figure out what the was, but I sure hope she didn't get sick later. We know we won't be going back. read more