Thinly sliced potatoes are baked to perfection in a blanket of mushrooms, green onions, green peppers and cheddar cheese. Serve as a side dish or appetizer.
Arrange potato slices in a shallow greased casserole dish. Sprinkle with salt and pepper. Pour water and butter over potatoes. Cover with aluminum foil. Bake for 1 hour.
Add vegetable oil to a skillet over medium heat. Add in mushrooms, green onions and green pepper and saute until veggies are cooked, about 10 minutes.
Add veggies on top of potatoes. Top with cheddar cheese. Return to oven and broil for 2 minutes, or until cheese is melted. Serve hot with sour cream and guacamole, if desired.