In a large mixing bowl combine two pounds of ground pork or beef, one cup of parmesan cheese, one-quarter cup of minced onion, one-half cup of milk, two teaspoons of garlic salt, and one-half teaspoon of pepper. Mix well and shape into meatballs. You should have forty-eight to fifty meatballs when done
Cut the mozzarella cheese into cubes, equalling the number of meatballs you have prepared. Push a cube of cheese into the center of each meatball, covering with the meat so that none of the cheese is exposed
Place one-half cup of Bisquick into a bowl, and roll each meatball until evenly coated
Brown the meatballs in a skillet using one-quarter cup of cooking oil over medium-high heat. Drain any excess oil. Pour in two twenty-eight-ounce jars of pizza or marinara sauce
Reduce heat, cover, and let cook for an additional thirty minutes
Serve on pasta or buns and enjoy