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Slow Cooker Protein-Rich Casserole

This comforting, protein-packed casserole simmers in the slow cooker while you tackle your day. With tender beef, beans, tortillas, and cheese, it’s a hearty hands-off meal that satisfies the whole family.
Course Dinner
Cuisine American, Tex-Mex
Keyword easy slow cooker recipe, family meal, freezer friendly, protein-rich casserole, slow cooker casserole
Prep Time 15 minutes
Cook Time 6 hours
Total Time 6 hours 15 minutes
Servings 6 servings
Calories 420kcal
Author Ellie
Cost 3

Equipment

  • skillet
  • slow cooker
  • cutting board
  • chef's knife
  • wooden spoon or spatula

Ingredients

  • 2 lb lean ground beef (or turkey/lentils)
  • 1 can black beans, drained and rinsed
  • 1 can diced tomatoes, undrained
  • 1 small onion, diced
  • 2 cloves garlic, minced
  • cups cheese, divided (Colby Jack or reduced-fat cheddar)
  • 8 small corn tortillas, torn into pieces
  • 1 tbsp chili powder
  • 1 tsp cumin
  • ½ tsp oregano
  • salt and pepper, to taste
  • ½ cup chicken or beef broth

Instructions

  • In a skillet over medium heat, cook and crumble ground meat until no pink remains. Stir in diced onion and garlic; sauté for 2 minutes.
  • Sprinkle in chili powder, cumin, oregano, salt, and pepper. Stir to coat, then mix in diced tomatoes (with juice), black beans, and broth.
  • Layer half of the meat mixture into the slow cooker. Add half the torn tortillas and sprinkle with half the cheese. Repeat with remaining ingredients, finishing with cheese on top.
  • Cover and cook on low for 6–8 hours, or high for 3–4 hours. Do not lift lid while cooking to retain heat and moisture.
  • Serve warm with toppings like sour cream, avocado, green onions, or cilantro. Pair with a salad or roasted veggies for a full meal.

Notes

Swap beef with turkey or lentils for variation. Spice it up with salsa verde or smoked paprika. Add kale or quinoa for a nutrient boost. Freezer-friendly and great for meal prep!

Nutrition

Calories: 420kcal | Carbohydrates: 28g | Protein: 33g | Fat: 21g | Saturated Fat: 10g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 7g | Trans Fat: 1g | Cholesterol: 90mg | Sodium: 730mg | Potassium: 620mg | Fiber: 6g | Sugar: 5g | Vitamin A: 750IU | Vitamin C: 8mg | Calcium: 290mg | Iron: 3.4mg