Make this recipe a recipe that people in that category can eat. categories: ['low_calorie'], recipe: cook meat slowly in skillet with salt and onion. meanwhile, make sauce by mixing together all other ingredients and cooking slowly over low heat for 15 minutes. drain (not much to drain if you use ground round) and add meat. let simmer for at least an hour, stirring from time to time, to let meat absorb the sauce. serve on toasted hamburger buns.

Target recipe: in a large skillet, cook beef over medium high, stirring to break up lumps. stir in green pepper, onion, zucchini and tomato. cook, stirring occasionally, until onion is tender, about 5 minutes. stir in tomato sauce, ketchup, worcestershire, and salt and pepper to taste. heat to boiling, reduce heat to low and simmer 10 minutes. spoon mixture over muffin halves and serve open face.