Chicken Tikka Masala

Name: Chicken Tikka Masala
Prep time: 4 h
Cook time: 40 min
Total time: 4 h 40 min
Cuisine: Asian, Indian
Ingredients: 3 tablespoons coriander; 3 tablespoons cumin; 1 teaspoon cardamom; 1 teaspoon cinnamon; 1 teaspoon turmeric; 2 teaspoons black pepper; 1/2 teaspoon ground cloves; 1/4 teaspoon red pepper flakes; 3 cloves garlic, grated; 3 teaspoons grated ginger; 1 1/2 tablespoons spice blend; 1 1/2 pounds boneless chicken thighs, cut into 1-inch pieces; 1 cup whole milk yogurt; 1 tablespoon vegetable oil; 3 butter pats; 1 onion, minced; 3 tablespoons tomato paste; 1 red pepper flake packet; 1 (28-ounce can) whole tomatoes, crushed; 1 1/2 cups heavy cream; 1/4 cup cilantro; Kosher salt; 4 cups cooked rice, for serving