Slow Cooker Butter Chicken

Ingredients

• 2 onions diced
• 3 cloves garlic minced
• 3 tablespoons butter
• 2 tablespoons fresh ginger grated
• 2 tablespoons brown sugar packed
• 2 teaspoons chili powder
• 3/4 teaspoon ground coriander
• 3/4 teaspoon ground turmeric
• 1/2 teaspoon cinnamon
• 1/2 teaspoon ground cumin
• 1/2 teaspoon salt
• 1/2 teaspoon ground black pepper
• 1 28 oz. can diced tomatoes
• 1 cup chicken broth
• 1/4 cup almond butter
• 3 pounds boneless skinless chicken thighs quartered
• 1 cup sour cream
• 2 tablespoons fresh cilantro chopped