These cookies are made without butter. They're low in sugar too, so are perfect if you're on a diet.Enjoy the simple flavor of sweet potatoes.
I make these as a snack when I'm dieting. For non-dieters, substitute butter for vegetable oil. They're even more delicious that way.
Straining the sweet potatoes gives a smoother texture, but if it's too much trouble, just mashing is fine!Be sure to bake them to a nice aromatic finish.
Enjoy Japanese food around the world.