Taco Bake

1 pkg. (14 oz.) Kraft Deluxe Macaroni & Cheese Dinner
1 lb. ground beef
1 pkg. (1-1/4 oz.) taco seasoning mix
3/4 cup water
3/4 cup sour cream
1-1/2 cups shredded cheddar cheese, divided
1 cup chunky salsa

Preheat oven to 400°F. Prepare Dinner as directed on package. While Macaroni is cooking, brown meat; drain. Add taco seasoning mix and water to meat; simmer 5 min.

Stir sour cream into prepared Dinner. Spoon half of the Dinner mixture into 8-inch square or 9-inch round baking dish; top with layers of the meat mixture, 1 cup of the cheese and remaining Dinner mixture. Cover.

Bake 15 min. Top with salsa and remaining 1/2 cup cheese. Bake, uncovered, an additional 5 min. or until cheese is melted.