How best to cook frozen boiled potatoes if I don t have an oven or microwave?

I had accidentally boiled too many potatoes and didn t want them to go bad so I put them in the freezer. Later I realized that thawed boiled potatoes are crazy soggy. I read online that people bake them or microwave them to make them more palatable but I don t have either appliance. I feel bad just throwing them away.
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