Butter Chicken

In a large bowl, whisk yogurt, garlic, lemon juice, garam masala, ginger, salt, and Kashmiri chili powder. Add chicken and toss to coat. Cover and refrigerate 1 hour.

Heat broiler and line a large baking sheet with foil. Spread chicken on prepared sheet in a single layer. Broil, watching closely, until charred and cooked through, about 15 minutes. Let cool slightly.

In a large, high-sided skillet over medium heat, melt butter. Add tomato paste and cook, stirring constantly, until darkened, about 5 minutes. Add chile and ginger and continue to cook, stirring, until fragrant and tomato paste is starting to stick to pan, about 1 minute more. 

Add garam masala, cumin, and chili powder and cook, stirring frequently, until fragrant and incorporated, about 30 seconds. Stir in cream, fenugreek (if using), 1/2 teaspoon salt, chicken, and 1 cup water. Bring to a simmer over medium-high heat, then reduce heat to low and continue to simmer, stirring occasionally, until sauce has slightly thickened and fat has separated, 10 to 15 minutes. 

Taste and season with salt, if needed. Top with cilantro. Serve over rice.