Pasta With Spicy Black Bean Sauce
["1 medium onion, coarsely chopped", "2 cloves garlic, minced", "1 Tbsp. vegetable oil", "1 (15 oz.) can black beans, rinsed and drained", "1 (16 oz.) can undrained stewed tomatoes, coarsely chopped", "1/2 c. picante sauce", "1 Tbsp. chili powder", "2 tsp. ground cumin", "1 tsp. crushed dried oregano", "4 c. hot, cooked macaroni shells or rotini", "14 oz. spaghetti, cooked and drained", "1/2 c. margarine, melted", "1 egg", "1 lb. hamburger, browned and drained", "2 c. spaghetti sauce (regular size jar)", "2 c. Mozzarella cheese, shredded"]
["Temporarily empty the cooked spaghetti in a 13 x 9-inch baking dish.", "Melt margarine in the same saucepan in which you cooked the spaghetti.", "Cool slightly; stir in the egg.", "Pour spaghetti back in saucepan and mix well.", "Arrange cooked spaghetti over bottom of the 13 x 9-inch baking dish.", "Crumble browned hamburger over spaghetti; top with sauce and then sprinkle cheese over all."]
["onion", "garlic", "vegetable oil", "black beans", "tomatoes", "picante sauce", "chili powder", "ground cumin", "oregano", "macaroni", "margarine", "egg", "hamburger", "spaghetti sauce", "Mozzarella cheese"]