Right after I moved to my current residence, my mother suggested that I microwave or bake sweet potatoes for a snack. They weren't very exciting. They were kind of dry and hard work to finish. Usually I'd buy two sweet potatoes at a time and bake one of them right away. The other would often end its life wilting on the window sill.
But then my eyes were opened.
I went to my grandfather's house, and there I saw how to bake a sweet potato. Here's the recipe I have learned from my grandather's wife:
Slice the sweet potato in half. (I usually slice them into thirds, because I'm impatient.)
Put the sweet potatoes in a pan sliced-side down.
Here's the crucial part: Put a little oil in the pan
Bake until very soft.
I bake them on 500° because I want them to bake quickly. Perhaps a lower temperature would be better. I know not.