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Slow Cooker Cowboy Casserole

Slow Cooker Cowboy Casserole is a hearty American main dish built with browned ground beef, black beans, and corn, then topped with frozen tater tots for a crisp-cheesy finish. Slow cooking keeps the filling thick and savory while the cheddar melts into a golden top.
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Prep Time 20 minutes
Cook Time 6 hours
Total Time 6 hours 20 minutes
Servings: 8 servings
Course: Main Dish
Cuisine: American
Calories: 520
Ingredients Equipment Method Notes

Ingredients
  

Beef and casserole base
  • 1.5 lb ground beef Brown in a skillet and drain excess fat before assembling.
  • 1 can (15 oz) corn Drain well so the casserole isn’t watery.
  • 1 can (15 oz) black beans Drain and rinse before adding.
  • 1 can (10.5 oz) cream of mushroom soup Use as the binder for the slow-cooked filling.
  • 1 cup beef broth Whisk into the soup mixture for a pourable sauce.
  • 1 packet (1 oz) ranch seasoning mix Adds ranch flavor to the creamy base.
  • 1 tsp chili powder
  • 0.5 tsp garlic powder
  • 0.5 tsp smoked paprika
  • 8 bacon Cook until crisp and crumble; reserve half to layer in stages.
Tater tot and cheese topping
  • 1 bag (32 oz) frozen tater tots Arrange in a single layer so they cook through evenly.
  • 2 cup shredded sharp cheddar cheese Sprinkle over top after the initial cook to melt into a cheesy layer.
  • 1 sour cream Serve on top.
  • 1 sliced green onions Serve on top.

Equipment

  • 1 cast iron skillet
  • 1 Dutch oven

Method
 

Brown the beef
  1. Cook the ground beef in a skillet over medium-high heat until browned, then drain excess fat to keep the casserole from becoming greasy.
Make the ranch mushroom sauce
  1. Whisk together the cream of mushroom soup, beef broth, ranch seasoning mix, chili powder, garlic powder, and smoked paprika until smooth and fully combined.
Assemble the filling
  1. Stir the browned ground beef, corn, black beans, and half the bacon into the soup mixture until evenly coated.
  2. Pour the mixture into the slow cooker and spread evenly, so it cooks consistently across the base.
  3. Arrange the frozen tater tots in a single layer across the top for even cooking.
Slow cook
  1. Cook on low for 6 hours (or on high for 3–3.5 hours) until the tater tots are cooked through, checking the center for doneness.
Finish with cheese
  1. Sprinkle the shredded cheddar and the remaining bacon over the top, cover, and cook on high for 10–15 minutes until the cheese is melted and bubbly.
Serve
  1. Serve topped with sour cream and sliced green onions for a fresh finish and extra flavor contrast.

Notes

For best texture, drain the corn and rinse the black beans well, and drain the browned beef thoroughly. Refrigerate leftovers in a covered container for up to 3 days; reheat in the oven or microwave until hot. Freezing is not recommended for the tater-tot topping after thawing. For a lighter option, use low-fat cheddar and reduced-sodium cream of mushroom soup (same process).