Creating Slow Cooker Cowboy Casserole can be straightforward if you follow these simple steps:

1. Brown the Beef: In a skillet over medium heat, brown the ground beef until fully cooked. Drain any excess fat.

2. Mix Ingredients: In a large bowl, combine the drained black beans, pinto beans, corn, diced tomatoes, and onion.

3. Season the Mixture: Add chili powder, cumin, garlic powder, salt, and pepper to the vegetable and bean mixture. Stir well until combined.

4. Layer in Slow Cooker: Begin layering the slow cooker by adding half of the beef, followed by half of the bean mixture. Sprinkle 1 cup of cheddar cheese over the top.

5. Repeat Layers: Layer the remaining beef, then the remaining bean mixture, and finish with the rest of the cheese.

6. Prepare Cornbread Mix: In a separate bowl, mix the cornbread mix according to package instructions, adding in the water until smooth.

7. Pour Cornbread Batter: Carefully pour the cornbread batter over the layers in the slow cooker without mixing them together.

8. Cover and Cook: Place the lid on the slow cooker and cook on low for 6-8 hours or high for 3-4 hours.

9. Check for Doneness: Ensure the cornbread is cooked through and a toothpick inserted in the center comes out clean.

10. Serve: Once done, remove the lid and let it sit for a few minutes before serving.

These steps will guide you in creating an effortless yet delicious Slow Cooker Cowboy Casserole that the entire family will love.