Combine yogurt, lemon juice, cumin, garam masala, red chili powder, salt, grated ginger, and minced garlic in a bowl. Mix well until smooth and fragrant, creating a harmonious marinade for the chicken.

Coat the chicken pieces in the marinade, ensuring each bite is fully covered. Allow it to marinate for at least 30 minutes—this helps to tenderize the chicken and infuse robust flavors.

Heat vegetable oil and butter in a large pan over medium heat. This combination creates a flavorful base to sauté the vegetables and spices, giving the dish its rich foundation.

Sauté the diced onion until it becomes soft and translucent, about 5-7 minutes. This step builds the essential sweetness and depth of flavor in your sauce.

Stir in the grated ginger, minced garlic, brown sugar, ground coriander, cumin, smoked paprika, and garam masala. Cook for 2 minutes, allowing the spices to bloom and release their incredible aromas.

Add the tomato sauce to the pan and let it simmer for 5 minutes, letting the flavors meld beautifully.

Reduce the heat and stir in the heavy cream until mixed well, transforming the sauce into a luscious, creamy blend.

Incorporate the marinated chicken into the sauce and cook until it is fully cooked through, about 10-15 minutes.

Adjust the consistency by adding water if the sauce is too thick, stirring to combine.