1 carton (6 ounces) whipped cream cheese with chives
2 pounds ground beef
2 large onions, thinly sliced
2 cans (8 ounces each) tomato sauce
4-1/2 teaspoons salt
1 tablespoon sugar
1 large egg
1 cup sour cream
Cook macaroni according to package directions; drain. Add cream cheese; toss until melted. Transfer to a greased 13-in. x 9-in. baking dish. In a skillet, cook beef and onions over medium heat until meat is no longer pink; drain. Add tomato sauce, salt and sugar; mix well. Spread over macaroni mixture. Combine egg and sour cream; spread over meat mixture. Bake, uncovered, at 350° for 45 minutes or until lightly browned.
If your grocery store doesn't carry cream cheese with chives, stir 1 to 2 tablespoons of chopped fresh chives into 6 ounces of softened plain cream cheese.