Crockpot Creamy Coconut Chicken Tikka Masala

Ingredients

• 6 tablespoons salted butter
• 2 pounds boneless, skinless chicken thighs or breasts, cut into cubes
• 1 medium yellow onion, diced
• 2 garlic cloves, minced
• 1 tablespoon freshly grated ginger root
• 2 tablespoons garam masala spice blend
• 1 1/2 teaspoons ground turmeric powder
• Kosher salt
• 1 can full-fat unsweetened coconut milk
• 1 can concentrated tomato paste
• 1/4 cup full-fat plain Greek yogurt
• 1/3 cup fresh cilantro leaves, chopped
• 2 tablespoons toasted sesame seeds
• 1 teaspoon red chili flakes
• 1/2 teaspoon smoked paprika
• 1 tablespoon freshly squeezed lemon juice