Step 1

Preheat oven to 400ºF. Spray a large cookie sheet with cooking spray.

Step 2

Mix together onion, bread crumbs, garlic, egg, cheese, ketchup, salt, pepper and parsley in a large mixing bowl.

Step 3

Add in ground beef and mix gently until combined. Do not overwork. Form into 1-inch balls and place on prepared cookie sheet.

Step 4

Bake in preheated oven for 15-20 minutes, or until meatballs are browned and cooked through.