Creating your One-Pan Baked Butter Chicken is simple if you follow these steps:

1. Preheat the Oven: Preheat your oven to 400°F (200°C) to ensure even cooking.

2. Sear the Chicken: In a large oven-safe skillet, heat the vegetable oil over medium-high heat. Season the chicken thighs with salt and pepper. Add them to the skillet and sear for about 5 minutes on each side until golden brown. Remove the chicken from the skillet and set it aside.

3. Cook the Onions: In the same skillet, add the chopped onion and sauté for about 2-3 minutes. Stir occasionally until they become translucent.

4. Add Aromatics: Add the minced garlic and grated ginger. Cook for another 1-2 minutes until fragrant.

5. Spice it Up: Stir in the garam masala, turmeric, chili powder, and cumin. Cook for 30 seconds to toast the spices.

6. Tomato Base: Pour in the crushed tomatoes, stirring to combine everything well. Simmer for about 5 minutes to allow the flavors to meld.

7. Creamy Goodness: Lower the heat and add the heavy cream, stirring until fully incorporated. Taste and adjust the seasoning if necessary.

8. Return Chicken: Place the seared chicken back into the pan, ensuring each piece is nestled in the sauce.

9. Bake: Transfer the skillet to the preheated oven and bake for 20-25 minutes, or until the chicken is cooked through (internal temperature should reach 165°F or 75°C).

10. Garnish and Serve: Once out of the oven, let it cool for a few minutes. Garnish with chopped cilantro before serving.

These steps will guide you through creating your own incredible One-Pan Baked Butter Chicken effortlessly.