Using the same dutch oven, melt ¼ cup of butter and add Tomato Sauce, Sugar, Red Chili, 1 tbsp of Fenugreek Leaves, and Garam Masala. Stir, and scrape all the bits of spice leftover from frying the chicken in the pan.
Continue to cook until tomatoes reduce, thicken, and butter begins to separate (approximately 15-20 minutes).
Add remaining Butter, Heavy Cream (reserving a few tablespoons), and Salt to taste. Return chicken to pan, bringing the mixture to a simmer. Cook for 5 minutes until chicken is cooked through.
Garnish with remaining Dried Fenugreek Leaves, and a drizzle of Heavy Cream.