1cupmini marshmallowsoptional; do not use for vegetarian/vegan
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Instructions
If you are baking other foods, wash and poke the sweet potatoes a couple of times and bake them until they are about ¾ done (about 45 minutes). Or, you can boil them with the skins on until they are almost done (about 20-30 minutes). Let them cool until you can handle them and then peel the skins off.
Spray a casserole dish with cooking spray.
Slice the potatoes in half and then cut the halves into 1-inch slices.
Place the sweet potato slices in the casserole dish, one layer thick.
Dot with tiny bits of butter (1 teaspoon per layer), sprinkle one or two tablespoons of brown sugar over the potato layer and sprinkle with cinnamon.
Repeat layers until you have no more sweet potatoes. I made three layers in a casserole dish shaped like a bread pan. I alternated the way the sweet potatoes were placed: first and third layers went across the pan, second layer was placed in the opposite direction (lengthwise) to create some space between the sweet potato layers.
Sprinkle the marshmallows on top and bake the casserole at 350F degrees for about 20-30 minutes. Serve hot.