
Preheat oven to 400 F.
Poke a few holes in the sweet potatoes and bake for 1 hour.
Remove and discard the skins from the potatoes, mash flesh in a bowl and allow to cool.
Mix the egg, cinnamon, sugar, salt and ½ cup of panko or bread crumbs into the sweet potatoes.
Place the remaining 1 1/2 cups of panko or bread crumbs in a separate bowl.
For each cake, coat 2 tablespoons of the mixture with the panko and shape into small patties.
Heat 2 tbsp of oil in a skillet over medium heat and place the patties into the skillet.
Pan-fry for 4 minutes on each side until golden.*
Continue to pan-fry the remaining cakes with oil as needed.
Serve.