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February 7, 2026

Fat Boy Casserole

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Fat Boy Casserole–an easy, hearty tater tot casserole made with seasoned ground beef, a creamy sauce, and melted cheddar cheese. A classic dish and one satisfying family dinner.

Fat Boy Casserole

Fat Boy Casserole

This tater tot casserole was a little different than some I’ve tried in the past. The secret is in the pre-cooking of the tater tots, which gives them a head start on crispiness before they meet the moisture of the beef and sour cream mixture. I used my air fryer for that step but you can totally do this step in the oven if you don’t have an air fryer. The mashed tot layer on the bottom creates a stable, almost hash-brown-like foundation, while the whole tots on top stay crispy and golden. It was quickly devoured by Skyler and me on a fast Sunday dinner. I loved a little ketchup on top of my piece. Try adding in some mixed veggies if you want some extra nutrition. (Recipe adapted from Fat Boy Tater Tot® Casserole on www.bestnaturalbbq.com).

Ingredients/Substitution Ideas

  • Tater tot crowns–or regular tater tots. I like Ore-Ida brand best. The crispy crowns work well for this casserole.
  • Lean ground beef–or ground turkey
  • Onion–or shallot
  • Worcestershire sauce–or steak sauce
  • Steak seasoning–I like Montreal steak seasoning
  • Garlic powder
  • Black pepper
  • Sour cream–or cream of mushroom soup
  • Milk–or half and half
  • Shredded cheddar cheese–or Colby Jack or a cheddar blend

Steps

Air fry tater tots at 400° F for 8 minutes or bake them in the oven at 425° for 12 minutes. Set aside.

Heat oven to 425°.

Heat a pan over medium high heat. Add in the ground beef and break it up. Add in the onion. Brown for about 5 minutes. Drain off excess grease. Stir in the 2 tsp Worcestershire sauce, steak seasoning, garlic powder and black pepper. Turn off heat and set aside.

Stir sour cream together with milk and 1 tsp Worcestershire sauce. 

In a 9×13 inch pan spread out half of the tots and mash them down with a fork.

Then spread the ground beef over the top.

Drizzle the sour cream mixture over the top of the beef.

Top with remaining tots and sprinkle cheddar over the top. 

Bake for 25 minutes. 

Serve and enjoy!

tater tot casserole
tater tot casserole

Notes/Tips

  • Serve with steamed green beans or a green salad. I liked a little ketchup on my slice.
  • I halved the recipe and made it in a 8×8 inch dish.
  • This recipe can be gluten free if you use gluten free Worcestershire sauce and gluten free tater tots.
  • For extra cheesy goodness, add 1/2 cup of cheese to the sour cream mixture before drizzling it over the beef.
  • Store leftovers in an airtight container* in the refrigerator for up to 4 days. I like this casserole best the first day when the tots are crispy.
  • Other recipes you can make with steak seasoning are Instant Pot Marinated Pork Chops and Instant Pot Poor Man’s Dinner.
Did you know you can filter the recipes on my website to search by meat type, IP or Crockpot, low carb, gluten free, etc.? Use the filter to find exactly what you are looking for. 
Tater tot crown casserole
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Fat Boy Casserole


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  • Author: 365 Days of Slow and Pressure Cooking
  • Prep Time: 25 minutes
  • Cook Time: 25 minutes
  • Total Time: 50 minutes
  • Yield: 6 servings 1x
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Description

An easy, hearty tater tot casserole made with seasoned ground beef, a creamy sauce, and melted cheddar cheese. A classic dish and one satisfying family dinner.


Ingredients

Scale
  • 24 oz tater tot crowns
  • 16 oz lean ground beef
  • 1/2 cup diced onion
  • 2 tsp Worcestershire sauce
  • 2 tsp steak seasoning (I used Montreal steak seasoning)
  • 1 tsp garlic powder
  • 1/2 tsp black pepper
  • 1 cup sour cream or 1 can cream of mushroom soup
  • 1/2 cup milk
  • 1 tsp Worcestershire sauce
  • 1 cup shredded cheddar cheese

Instructions

  1. Air fry tater tots at 400° F for 8 minutes or bake them in the oven at 425° for 12 minutes. Set aside.
  2. Heat oven to 425°.
  3. Heat a pan over medium high heat. Add in the ground beef and break it up. Add in the onion. Brown for about 5 minutes. Drain off excess grease. Stir in the 2 tsp Worcestershire sauce, steak seasoning, garlic powder and black pepper. Turn off heat and set aside.
  4. Stir sour cream together with milk and 1 tsp Worcestershire sauce. 
  5. In a 9×13 inch pan spread out half of the tots and mash them down with a fork. Then spread the ground beef over the top. Drizzle the sour cream mixture over the top of the beef. Top with remaining tots and sprinkle cheddar over the top. 
  6. Bake for 25 minutes. 
  7. Serve and enjoy!
  • Category: Beef
  • Method: Stove and Oven

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*Karen Petersen is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

6 Comments Filed Under: All Recipes, Beef, Can Be Gluten Free, Other Methods Tagged With: casseroles

Comments

  1. Mike Miller says

    March 6, 2026 at 9:58 am

    I’m gonna make this today or tomorrow for the bball games this weekend. Thinking of adding a can of corn for a little sweet.

    Reply
    • Karen says

      March 7, 2026 at 7:56 pm

      That’s a great idea. Corn will work really well in this recipe!

      Reply
  2. Kathy Wildman says

    February 9, 2026 at 6:50 am

    It sounds delicious. What do you think if I added a bag of frozen peas and carrots maybe with the meat layer?

    Reply
    • Karen says

      February 20, 2026 at 5:07 pm

      I love that idea! Maybe warm them a little with the meat.

      Reply
  3. Donna says

    February 8, 2026 at 6:00 am

    This sounds and looks delicious!
    hugs
    Donna

    Reply
    • Karen says

      February 20, 2026 at 5:09 pm

      Thanks Donna! Enjoy!

      Reply

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Hi, I’m Karen. I know that dinner time can be less than relaxing. Busy schedules and cranky kids and a hundred other things can lead to weariness when it comes to putting dinner on the table. I can help! I make homemade, family-friendly slow cooker and Instant Pot dinners and share the recipes with you.

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