Brown the Ground Meat:

In a skillet over medium heat, cook the ground beef or turkey until browned and cooked through. Drain excess fat and add the diced onion. Sauté for 2-3 minutes until softened.

Combine Ingredients in the Crockpot:

Transfer the browned meat and onion mixture to your crockpot. Add the taco seasoning, diced tomatoes with green chilies, black beans, frozen corn, and beef broth. Stir to combine.

Cook:

Cover and cook on low for 6-8 hours or high for 3-4 hours.

Add Rice:

About 30 minutes before serving, stir in the uncooked white rice. Cover and let the rice cook until tender.

Add Cheese:

Stir in 1 cup of shredded cheddar cheese until melted into the soup.

Serve:

Ladle the soup into bowls and top with sour cream, additional cheese, tortilla chips, cilantro, and lime wedges as desired.