I love cheese and this recipe is an excellent use of leftover mashed potatoes, too :-)
Saute chopped onion in oil until tender. Combine the sauteed onion, mashed potatoes, 1 cup cheese, bacon, salt and pepper in a large bowl. Spoon mixture into a baking dish and sprinkle with remaining cheese. Bake uncovered at 350 degrees F. for 20-25 minutes or until cheese is melted.
By Deeli from Richland, WA