Creole Baked Potato Salad

8 medium red potatoes, cooked & cubed
1 lb cheddar cheese, grated
1/2 c onion, finely chopped
1 c mayo
1/2 lb cooked bacon, not too crispy

Combine cheese, mayo & onion. Mix in sliced potatoes & spread in buttered 9x13 baking dish. Top w/bacon. Bake @ 350 for 1 hour