Preheat oven to 400 degreed Fahrenheit.
Combine all ingredients, except the marinara sauce, in large bowl. Shape into about 20 2-inch meatballs.
Add meatballs to a baking sheet lined with parchment paper and bake for 30 minutes.
Once meatballs are finished baking, add meatballs and marinara sauce to a large skillet over medium heat. Cover and cook the sauce is warmed through.