For Homemade Meatballs: Mix ground beef, egg, minced onion, Parmesan cheese, pressed garlic, basil, parsley, salt, and pepper in a large mixing bowl. Squeeze out the bread, break it up, and mix into the bowl. Shape into 1-inch meatballs and place on a greased or parchment-lined baking sheet. Bake for 20-22 minutes.