Creating homemade butter chicken is straightforward when you follow these easy steps:

1. Prep the Chicken: Cut the chicken thighs into bite-sized pieces. Set aside.
2. Cook the Onions: In a large pan, heat the vegetable oil over medium heat. Add the chopped onions and sauté until golden brown, about 5-7 minutes.
3. Add Garlic and Ginger: Stir in the minced garlic and ginger, cooking for an additional minute until fragrant.
4. Cook the Chicken: Add the chicken pieces to the pan, cooking until they’re no longer pink, about 5-6 minutes.
5. Add Spices: Mix in the garam masala, cumin, coriander, turmeric, chili powder, and salt. Cook for 2-3 minutes to toast the spices.
6. Incorporate Tomato Puree: Pour in the tomato puree, stirring well to combine. Let it simmer for 10 minutes.
7. Pour in Heavy Cream: Reduce the heat to low and stir in the heavy cream and butter. Cook for another 5 minutes until heated through, but do not boil.
8. Taste and Adjust: Taste the sauce and adjust salt and spice levels as necessary.
9. Serve: Garnish with fresh cilantro before serving.

This step-by-step guide will lead you to an incredible homemade butter chicken that will impress your family and friends.