Jenny's blog: "good stuff to eat"

2 packages (10 ounces each) STOUFFER'S LEAN CUISINE frozen Macaroni and Cheese, defrosted*, divided 8 ounces lean ground beef 2 tablespoons (half of 1.25-ounce package) taco seasoning mix 2 tablespoons fat free sour cream 1/2 cup diced tomato 1/3 cup crushed baked potato chips or tortilla chips 1/2 cup (2 ounces) shredded cheddar cheese PREHEAT oven to 400º F. COMBINE beef and seasoning mix in large, nonstick skillet. Cook over medium-high heat, stirring occasionally, for 2 to 3 minutes or until beef is no longer pink. COMBINE 1 package macaroni and cheese and sour cream in medium bowl; spread over bottom of 8-inch-square baking dish. Top with beef mixture. Spread remaining package macaroni and cheese over beef mixture; top with tomato, potato chips and cheese. BAKE for 20 to 25 minutes or until bubbly around edges. * DEFROST macaroni and cheese in microwave on MEDIUM (50%) power for 5 to 6 minutes. Serving Size: 6