Creating the Slow Cooker Cowboy Casserole is simple and rewarding. Just follow these easy steps:

1. Brown the Meat: In a skillet over medium heat, add olive oil. Once hot, add the ground beef or turkey. Season with salt and pepper. Cook until browned, breaking it apart with a spoon as it cooks.
2. Add Aromatics: Once the meat is browned, add the diced onion, bell pepper, and garlic to the skillet. Sauté until the vegetables soften, about 3-4 minutes.
3. Combine Ingredients: Transfer the meat and vegetable mixture to the slow cooker.
4. Layer the Beans and Corn: Add the black beans, kidney beans, corn, and diced tomatoes to the slow cooker. Stir to combine all ingredients well.
5. Season the Dish: Sprinkle the taco seasoning over the mixture. Stir until everything is evenly coated.
6. Cook: Cover the slow cooker with a lid and set it on low for 6-8 hours or high for 4-5 hours, depending on your schedule.
7. Add Cheese: 30 minutes before serving, sprinkle shredded cheddar cheese on top. Re-cover and allow it to melt.
8. Serve and Enjoy: Once cooked, give the casserole a good stir before serving. Consider topping with sour cream, cilantro, or avocado for added flavor.

With these steps, you’ll effortlessly create a delicious, comforting meal that is sure to please everyone.