Brown the Meat:
Heat a large skillet over medium heat. Add the ground beef and cook until browned, about 5–6 minutes. Drain any excess fat.
Add Aromatics and Seasoning:
Stir in chopped onion and diced bell pepper. Cook for 2–3 minutes until softened. Add taco seasoning and diced tomatoes with green chilies. Stir to combine.
Layer in the Crockpot:
Lightly grease your slow cooker. Add the cooked beef mixture, black beans, corn, cooked rice, and salsa. Stir gently to combine all ingredients.
Add Cheese and Cook:
Sprinkle a layer of shredded cheese on top. Cover and cook on Low for 4–5 hours or High for 2–3 hours, until hot and bubbly.
Top and Serve:
Before serving, add another handful of cheese and let it melt for 5–10 minutes. Scoop into bowls and top with your favorite taco toppings like sour cream, avocado, or crushed tortilla chips.