Meatballs:

• 1 pound ground chicken
• 1/4 cup plain breadcrumbs
• 1 egg
• 2 cloves garlic, minced
• 1 tablespoon fresh ginger, minced
• 1/4 cup finely chopped onion
• 2 tablespoons chopped fresh cilantro
• 1 teaspoon garam masala
• 1/2 teaspoon ground cumin
• 1/2 teaspoon salt

Butter Chicken Sauce:

• 2 tablespoons vegetable oil
• 2 tablespoons unsalted butter
• 1 small onion, finely chopped
• 2 cloves garlic, minced
• 1 tablespoon fresh ginger, minced
• 1 can (15 ounces) tomato sauce
• 1/2 cup heavy cream
• 1/4 cup plain Greek yogurt
• 1 tablespoon garam masala
• 1 teaspoon ground cumin
• 1/2 teaspoon smoked paprika
• 1/4 teaspoon cayenne pepper (optional)
• Salt and black pepper, to taste
• Chopped fresh cilantro, for garnish
• Cooked rice or naan, for serving