Spicy Berbere Meatballs – Rumi Spice

Ingredients

• 1 lb. ground beef (or ground lamb, pork or chicken, if preferred)
• ½ cup Panko breadcrumbs
• 2 Tbsp plain Greek yogurt
• 1 tsp fresh lemon zest
• 3 ½ tsp Rumi Berbere spice blend, divided
• Kosher salt and freshly-ground black pepper 
• 1 Tbsp extra virgin olive oil
• 1 yellow onion, diced
• 3 large garlic cloves, minced 
• 1 (28-ounce) can whole-peeled tomatoes 
• 1 (15-ounce) can crushed tomatoes
• ½ cup crumbled feta cheese
• ½ cup chopped fresh herbs, such as parsley, cilantro or mint
• Crusty bread or pita, for serving