Cut in thin, 1/8" thick slices. Top with mashed potatoes, add a tablespoon of orange marmalade on top of the potatoes. Bake in the oven until the potatoes are slightly browned.
My former daughter-in-law topped with rice and a sweet sauce. Google "loco moco" for lots of examples
For Hawaiian style, Top each slice with a piece of sliced, canned pineapple and a teaspoon of brown sugar. Let it simmer a while in the pineapple juice.
That sounds like it might be good. I cant even remember what it tastes like
Someone here was wanting quick and easy meal ideas for the preps. That would work with potato flakes.