In a medium skillet set over medium heat, add the ground turkey or beef. Cook until browned, breaking it apart with a spatula as it cooks. Drain any excess fat from the pan.
To the skillet, add the finely chopped onion, bell pepper, and minced garlic. Sauté for approximately 5 minutes, or until the vegetables become tender and fragrant.
Transfer the cooked meat and vegetable mixture to a slow cooker. Add the black beans, sweet corn, diced tomatoes (with their juice), and taco seasoning. Stir everything together thoroughly to ensure even distribution of flavors.
Gently fold in the crushed tortilla chips until they are well incorporated into the mixture.
Cover the slow cooker and set it to cook on low for 4-6 hours, or on high for 2-3 hours.
In the final 30 minutes of cooking, sprinkle the shredded cheese evenly on top of the casserole. Re-cover the slow cooker to allow the cheese to melt perfectly.
Once cooking is complete, taste and season with salt and pepper as needed. Stir gently to mix the flavors before serving.
Notes
Serve topped with extra crushed tortilla chips, sour cream, jalapeños, cilantro, and avocado.
Keyword casserole, crockpot, easy, family meal, taco