Heat 1 Tablespoon olive oil in a large skillet over medium high heat. Add 4 cloves garlic (minced) and 1 onion (diced), and sauté until onions become translucent, about 2-3 minutes.
Stir in 1 14-ounce can coconut milk, 1 6-ounce can tomato paste, 2 Tablespoons flour, 1 Tablespoon fresh ginger, 1 Tablespoon curry powder, 2 teaspoons garam masala, 1 teaspoon chili powder, 1 teaspoon salt & 1/2 teaspoon black pepper until well combined and slightly thickened, about 1-2 minute.
Place 2 pounds chicken breasts or thighs (cut into 2-inch pieces) into a slow cooker. Cover with sauce mixture. Cover and cook on low heat for 6 hours, or high heat for 3 hours.
Serve garnished with cilantro and greek yogurt.
Video
Notes
Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the microwave or in a large skillet on the stove over medium heat.