Combine the cubed chicken breasts with all the ingredients needed for the marinade.
4 Chicken breasts, ¼ cup Plain greek yogurt, 2 tablespoon Lemon juice, 1 tablespoon Garlic paste, 1 tablespoon Ginger paste, 1 teaspoon Chaat masala, ½ teaspoon Garam masala, 1 teaspoon Kashmiri Chilli powder, 1 teaspoon Paprika
Bring a large skillet to medium-high heat. Saute the marinated chicken with a tablespoon of butter, until the chicken is cooked through and lightly browned. Remove the chicken from the skillet and set aside.
1 tablespoon Salted butter, 1 tablespoon Garlic paste, 1 tablespoon Ginger paste, 15 Cashews, 1 Cinnamon stick, 2 pods Green cardamon
Add the ground spices to the skillet, and toast. Add the tomato passata to the skillet, and let it cook through until the water has evaporated, and it has thickened.
1 teaspoon Kashmiri chilli powder, 1 teaspoon Garam masala, 1 cup Tomato passata, 2 tablespoon Sugar, Sea salt, 1 cup Water
Once the passata mixture has thickened, remove the visibly large spices like cardamon pods and cinnamon sticks, and put the sauce into a blender. Add half of the water, and blend until smooth.
Return the mixture back to the skillet, and add the remaining water. Add the sugar and salt, as well as the chicken. Finish with heavy whipping cream, and dried fenugreek.
½ cup Heavy whipping cream, 2 teaspoon Dried fenugreek