Preheat oven to 350. Cook pasta in a large pot of boiling water until al dente; drain. In a large skillet, cook ground beef and onion over medium heat until brown; drain. Mix in tomato soup, diced tomatoes and taco seasoning mix. Stir in pasta. Spoon beef mixture into a 9x13 inch baking dish. Sprinkle crumbled taco chips and grated cheese on top. Bake for 30-35 minutes, until the cheese is melted. Serve with chopped green onions and sour cream, if desired. |