Pumpkin Chicken Tikka Masala

Ingredients

• 2 lb chicken breast, cubed into 1½ inch pieces
• 1 cup plain greek yogurt
• 1 tbsp garlic powder
• 1 tbsp ground ginger
• 2 tsp garam masala
• 1 tsp ground turmeric
• 1 tsp salt
• 2 tbsp unsalted butter
• 2 yellow onions, chopped
• 1 tbsp ginger paste
• 1 1/2 tsp garam masala
• 1 tsp cumin powder
• 1 tsp coriander
• 2 tbsp tomato paste
• Pinch of red pepper flakes
• 15 oz pumpkin puree
• 13 1/2 oz coconut milk
• 1/2 cup fresh cilantro, roughly chopped
• Basmati rice and naan for serving