Creating Slow Cooker Indian Butter Chicken is a straightforward process. Follow these simple steps to ensure success:

1. Prepare the Chicken: Cut the chicken thighs into bite-sized pieces and place them in the slow cooker.
2. Add Aromatics: Add the chopped onion, minced garlic, and grated ginger to the slow cooker. Mix gently.
3. Spice It Up: Sprinkle the garam masala, cumin, coriander, turmeric, and chili powder over the chicken and aromatics. Stir well to coat evenly.
4. Tomato Base: Pour the tomato sauce over the mixture. Stir to combine all ingredients thoroughly.
5. Butter It Up: Add the cubes of butter on top. Don’t worry; they will melt and enrich the sauce.
6. Season: Add salt to taste and give the mixture one final stir.
7. Set the Slow Cooker: Cover and cook on low for 4 to 6 hours or high for 2 to 3 hours, until the chicken is tender.
8. Add Cream: About 30 minutes before serving, stir in the heavy cream (or coconut milk) to create a luxurious sauce.
9. Garnish: Before serving, sprinkle fresh cilantro on top for a burst of flavor and color.

This method will help you achieve a delectable result that will have everyone asking for seconds!