Making Slow Cooker Indian Butter Chicken can be effortless if you follow these simple steps:

1. Prep Chicken: Cut the boneless, skinless chicken thighs into bite-sized pieces.
2. Combine Ingredients: In the slow cooker, add the chopped onion, minced garlic, grated ginger, crushed tomatoes, coconut milk (or cream), and butter.
3. Add Spices: Sprinkle in the garam masala, ground coriander, cumin, turmeric, paprika, as well as salt and pepper.
4. Mix Well: Stir everything together until the chicken pieces are well coated with the sauce and spices.
5. Set Cooker: Cover the slow cooker with a lid and set it to low for 6-8 hours or high for 3-4 hours.
6. Check for Doneness: Ensure the chicken is cooked through and tender before serving.
7. Finish Sauce: If desired, stir the sauce well before serving and adjust seasonings to taste.
8. Garnish: Use fresh cilantro to garnish the dish just before serving for a pop of color.
9. Serve Hot: Serve the butter chicken over cooked rice or with warm naan.

These steps will guide you through creating this mouth-watering dish without any hassle.