Meatballs in Tomato Garlic Sauce

In a 9-inch heavy well-seasoned skillet (preferably cast-iron) cook onion and bell pepper in 2 tablespoons oil over moderately low heat, stirring occasionally, until softened and cool mixture. In a large bowl combine well onion mixture, ground meat, bread crumbs, salt, nutmeg, and parsley. Form level tablespoons of mixture into balls (about 90). In skillet heat 1 tablespoon oil over moderately high heat until hot but not smoking and brown meatballs in batches (about 16 at a time), shaking skillet frequently so that meatballs maintain their shape and adding remaining 3 tablespoons oil as necessary. Transfer meatballs with a slotted spoon as browned to a bowl.