Gather and prep all ingredients (cut up the chicken, etc)
Put all spices including salt into a small bowl and mix together..
Heat dutch oven on the stovetop to medium heat.
Once heated, add oil and butter then add onion. Cook on medium for 10 minutes, stirring occasionally.
Preheat the oven to 350 F.
Stir in the ginger and garlic and cook for another minute or so.
Add tomato paste or sauce. For paste: cook, mixing constantly until it is darkened in color, about 3 minutes. For sauce: cook, mixing frequently, until sauce reduces almost to the texture of tomato paste (about 20 minutes).
Stir in the spices and cook for one minute. Turn off the heat.
Add ½ cup water to pot and stir to combine.
Add the chicken pieces to the pot. Stir carefully to combine.
Put the lid on and bake for about 35 minutes until chicken reaches 185 F. (it is technically cooked at 165 but tastes better at 185)
Stir in heavy cream.
Serve with rice and naan.