Now that you have your ingredients, let’s get started with the preparation of Chicken Tikka Masala:

1. Marinate the Chicken: In a bowl, combine yogurt, lemon juice, 1 tablespoon vegetable oil, garam masala, cumin, coriander, paprika, turmeric, garlic, ginger, and salt. Add chicken pieces and coat well. Cover and refrigerate for at least 1 hour or preferably overnight.

2. Preheat the Oven: Preheat your oven to 400°F (200°C). Alternatively, you can use a grill or stovetop skillet.

3. Cook the Chicken: Arrange marinated chicken on a baking sheet or grill. Cook for 15-20 minutes or until cooked through, turning once halfway. The chicken should be lightly charred.

4. Prepare the Sauce: In a large skillet, heat the remaining 1 tablespoon of oil over medium heat. Add crushed tomatoes and cook for 5-7 minutes, stirring occasionally.

5. Add Spices: Stir in remaining garam masala and additional salt to taste. Allow it to simmer for 5 minutes for the flavors to meld.

6. Creamy Mixture: Lower the heat and gradually stir in heavy cream. Let it simmer on low for about 5 minutes, allowing the sauce to thicken.

7. Combine: Add the grilled chicken to the sauce, gently stirring to coat. Allow to cook for an additional 5 minutes so the chicken can absorb the flavors.

8. Garnish: Remove from heat and garnish with fresh cilantro before serving.

9. Serve: Serve hot, paired with basmati rice or naan bread.

Following these steps will help you create a wonderful Chicken Tikka Masala that will leave everyone wanting more.