|Brown ground beef in butter, add onion and garlic. Stir in tomato sauce, salt and pepper. Combine sour cream, cheese, and carrots. Add the combination to noodles and mix.
Alternate layers of the meat mixture and noodles mixture in a 3 quart greased casserole beginning and ending with the noodles. Top with cheddar cheese. Bake at 350 degrees for at least 45 minutes.