Potatoes and Carrots Au Gratin
Prepare as above, except do not bake. Cover and chill in the refrigerator for up to 24 hours. Bake, uncovered, in a 350 degree F. oven about 25 minutes or until cheese sauce is bubbly around edges of dish. Sprinkle with remaining shredded Gruyere cheese. Bake about 5 minutes more or until cheese is melted and casserole is heated through.