Creating delicious Slow Cooker Indian Butter Chicken is simple if you follow these easy steps:

1. Prepare the Chicken: Pat the chicken thighs dry with paper towels and season lightly with salt.
2. Chop the Onion: In a medium bowl, combine the chopped onion, garlic, and grated ginger.
3. Combine Ingredients: In the slow cooker, add the seasoned chicken, the onion mixture, crushed tomatoes, garam masala, cumin, coriander, turmeric, and chili powder.
4. Mix Well: Gently stir the ingredients to ensure everything is well combined.
5. Add Butter: Place the unsalted butter on top of the mixture but do not stir it in yet.
6. Set the Cooker: Cover and cook on low for 4 hours or on high for 2 hours, until the chicken is tender and cooked through.
7. Shred the Chicken: After cooking, carefully remove the chicken and shred it using two forks.
8. Mix in Cream: Return the shredded chicken to the slow cooker and stir in the heavy cream. Adjust seasoning if necessary.
9. Final Cooking: Let it cook for an additional 15 minutes on low to allow the flavors to meld together.
10. Garnish: Serve hot, garnished with fresh cilantro.

These steps will guide you in effortlessly preparing an incredible dish of Slow Cooker Indian Butter Chicken that your family will love!