Creating Slow Cooker Butter Chicken is straightforward if you follow these simple steps:

1. Prepare the Chicken: Trim any excess fat from the chicken thighs and cut them into bite-sized pieces.
2. Sauté Aromatics: In a skillet, heat the vegetable oil over medium heat. Add the chopped onion, garlic, and ginger, sautéing until the onion is soft and translucent.
3. Add Spices: Stir in the garam masala, cumin, coriander, turmeric, and chili powder. Cook for another minute until fragrant.
4. Combine Ingredients: Transfer the sautéed mixture to the slow cooker. Add the chicken pieces, tomato puree, and sugar. Mix well to coat the chicken in the sauce.
5. Cook: Cover and cook on low for 6-8 hours or on high for 3-4 hours, until the chicken is tender.
6. Finish the Sauce: Once the chicken is cooked, stir in the heavy cream. Allow it to heat through for another 30 minutes on low.
7. Season: Taste the sauce and adjust seasoning with salt and pepper as needed.
8. Garnish: Before serving, sprinkle with fresh cilantro for added flavor and color.

These steps will guide you in creating this incredible dish effortlessly!