Mario’s Cafe

Mario’s Cafe, 107 O’Fallon Plaza, O’Fallon, MO, offers breakfast, lunch, and dinner.

O’FALLON, MO (St. Louis Restaurant Review) Mario’s Cafe (MC) is a relatively new restaurant.  Still, its owner is a seasoned restaurant operator, having previously owned Dos Primos Mexican Restaurant on Main Street in O’Fallon, Missouri.  Both restaurants are highly rated and demand attention for their award-winning Mexican cuisine.  Mario’s Cafe serves Tex-Mex cuisine, with many of the recipes having been handed down through generations.

There are plenty of Mexican restaurant options in the St. Louis region.  However, few have the ratings that Mario’s Cafe has, with 4.9 Stars on Google, and the time-tested reputation that Dos Primos Mexican Restaurant has maintained since its inception.

They are in the process of launching all major online ordering platforms, such as DoorDash, GrubHub, Uber Eats, and featuring eOrderSTL, a St. Louis Restaurant Review digital marketing service.  eOrderSTL will feature delivery within a 5-mile radius using DoorDash or Uber Eats to deliver the food.

Following the launch of these platforms, a massive campaign will commence to inform residents of the opening of MC and remind them of the success and quality of Dos Primos Mexican Restaurant.

They offer:

• Breakfast – Lunch – Dinner
• Dine-in
• Patio with umbrellas – it is located on the east side of the building, eliminating the sun as a problem in the evening.
• Online Ordering featuring eOrderSTL
• Delivery using third-party delivery companies such as DoorDash, GrubHub, and Uber Eats
• Carryout
• Beer, Wine, and Mixed Drinks
• Clean and Safe Atmosphere

STL.News recently published an article that might help you compare to decide which restaurant suits your mood.  Both places offer excellent Mexican cuisine in a safe and clean atmosphere, but the atmospheres are different.  One is not better than the other, but different.  We recommend that you read the article.  Having said that, we highly recommend both places and know the restaurant owner well.

The most impressive thing we witnessed, which is a significant achievement for us, is the cleanliness.  Many restaurant owners do not take this as seriously as they should.  Therefore, when we see a restaurant that projects pride in its ownership and is clean and well-maintained, we like to point it out to our audience.

We were impressed with both locations and equally as impressed with the owner.  He takes a significant amount of pride in his facilities and wants a high customer satisfaction.

MC is located in the O’Fallon Plaza on Main Street in O’Fallon, just off the highway, making it an easy destination to enjoy regardless of where you’re driving from to experience this unique establishment.

MC online ratings and reviews are as follows as of September 6, 2025:

• Google – 4.9 Stars with 67 online customer ratings and reviews
• Facebook – 5 Stars with 5 online customer ratings and reviews – 94 followers
• Yelp – 4.9 Stars with 10 online customer ratings and reviews
• TripAdvisor – Not Rated Yet
• STL.Directory – 5 Stars with one online customer rating and review

NOTE: These ratings and reviews are subject to change without notice, as customers can publish reviews 24/7/365.  We will update these ratings multiple times each year.

Business hours:

• Sunday – 7:00 am – 9:00 pm
• Monday – CLOSED
• Tuesday – 7:00 am – 9:00 pm
• Wednesday – 7:00 am – 9:00 pm
• Thursday – 7:00 am – 9:00 pm
• Friday – 7:00 am – 10:00 pm
• Saturday – 7:00 am – 10:00 pm

NOTE: Business hours are subject to change without notice.  Please call the restaurant to verify critical information.

Business structure:

• Legal Name: Mario’s Cafe, LLC
• Date Filed: August 14, 2024
• File Number: LC014570072
• Source: Missouri Secretary of State

NOTE: This information is subject to change without notice.  For the most up-to-date information regarding the business structure, refer to the Missouri Secretary of State’s website.

Contact Information – name, address, and phone (NAP):

Mario’s Cafe
107 O’Fallon Plaza
O’Fallon, Missouri 63366
Phone: 636-339-2346
Email: fmarios435@gmail.com
Website: MariosCafeSTL.com

Additional resources:

• STL.News Listing
• USBiz.Directory Listing