Slow Cooker Hamburger Potato Casserole

slow cooker hamburger and potato casserole

The Spruce / Diana Rattray

  • Total: 7 hrs 15 mins
  • Prep: 15 mins
  • Cook: 7 hrs
  • Yield: 5 to 8 Servings
Nutritional Guidelines (per serving)
502 Calories
27g Fat
19g Carbs
44g Protein
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Nutrition Facts
Servings: 5 to 8 Servings
Amount per serving
Calories 502
% Daily Value*
Total Fat 27g 35%
Saturated Fat 13g 66%
Cholesterol 143mg 48%
Sodium 697mg 30%
Total Carbohydrate 19g 7%
Dietary Fiber 3g 10%
Protein 44g
Calcium 346mg 27%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

This easy hamburger casserole is made with convenient ingredients. The instant mashed potato topping makes this layered dinner similar to a cottage pie.

The recipe is an adaptation of one from a Rival recipe brochure. The original recipe used mashed potato flakes and much more sour cream. Since some instant potatoes take more water and/or milk per cup of flakes, we prepare them following the package directions.

If you decide to make homemade mashed potatoes, make them with about 4 to 5 medium potatoes and add sour cream to them before you spread them over the ground beef. 


  • 2 pounds lean ground beef (browned and drained)
  • 1 can (8 ounces) tomato sauce
  • 1 small onion (chopped)
  • 2 cloves garlic (minced)
  • 10 to 12 ounces frozen green beans, corn, or mixed vegetables (thawed, 1 1/2 to 2 cups)
  • 1 teaspoon kosher salt
  • 1 teaspoon black pepper (freshly ground)
  • 2 cups prepared mashed potatoes (instant or fresh)
  • 1/4 cup sour cream (more or less, or to taste)
  • 1 to 1 1/2 cups shredded cheddar cheese
  • Dash of paprika

Steps to Make It

  1. Spray the inside of the slow cooker with nonstick cooking spray.

  2. In a large skillet, brown the ground beef; drain off fat.

  3. Add tomato sauce, chopped onion, garlic, mixed vegetables, salt, and pepper to the ground beef. Transfer the beef and vegetable mixture to the crockery insert of the slow cooker.

  4. In a bowl, combine the prepared mashed potatoes with sour cream, to taste.

  5. Spread the mashed potato mixture over the beef mixture. Cover and cook on LOW for 5 to 7 hours or on HIGH for 3 to 4 hours.

  6. Sprinkle the potato layer with the shredded cheddar cheese and paprika 30 minutes before serving.