Preheat oven to 375. Grease a 2-qt. casserole dish. Prepare the deluxe macaroni and cheese dinner as directed on the package. Combine all the cheeses together, In a small bowl beat the egg, milk and pepper together. Spoon half the prepared macaroni in the casserole dish. Top with half the cheese. Repeat the layers. Drizzle egg mixture over the top.
Bake about 15 minutes until center is set and macaroni is heated through.