Kefta Tagine (Lamb Meatball, Olive, and Egg Tagine)

Ingredients

• 1 lb. ground lamb
• 1 1⁄2 tbsp. ground cumin
• 1 1⁄2 tbsp. paprika
• Kosher salt
• freshly ground black pepper
• 4 tbsp. unsalted butter
• 2 tbsp. olive oil
• 4 cloves garlic, minced
• 1 large yellow onion, minced
• 1 tsp. crushed red chile flakes
• 1⁄2 tsp. ground ginger
• 1⁄2 tsp. crushed saffron threads
• 1 bay leaf
• 28 oz. canned whole peeled tomatoes in juice, drained, crushed by hand
• 4 eggs
• 1⁄2 cup unpitted kalamata olives
• 1⁄4 cup finely chopped parsley