Cook the Beef:
In a skillet, brown the ground beef until cooked through. Drain the fat, then stir in the taco seasoning.
Assemble in the Crockpot:
Add beef, beans, corn, tomatoes, onions, salsa, and rice (if using) to your slow cooker. Stir gently to combine.
Cook:
Cover and cook on LOW for 4–6 hours or HIGH for 2–3 hours until bubbly and flavorful.
Add Cheese:
Sprinkle shredded cheese on top 10 minutes before serving. Let it melt with the lid on.
Serve:
Garnish with cilantro, avocado slices, or sour cream. Serve with tortilla chips, in wraps, or over lettuce for a taco salad twist.