Preheat oven to 400°F.
Line a sheet pan with tinfoil for easy cleanup. Place bell pepper halves on pan. Add garlic cloves directly on or under red pepper to ensure garlic doesn’t dry out while roasting. Roast for 20-30 minutes, or until bell peppers are at your desired level of doneness.
Prepare the meatballs while the peppers/garlic bake. In a medium bowl, add all meatball ingredients except the feta crumbles. Mix with fork or hands until fully combined, then gently fold in feta crumbles.
Roll meatballs into approx. 1” balls and place on sheet pan, lined with tinfoil and greased with cooking spray or oil. Bake for 25 to 30 minutes, or until tops have started to brown and inside is fully cooked. Cut one meatball open just to make sure it’s safe!
Add sauce ingredients into a blender/food processor and blend until totally smooth. Coat meatballs in sauce and enjoy!