Low-fat Sweet Potato Muffin

Steam the chestnut potatoes until cooked, mash them, put them into a mold, and press flat.

Mix quick-cooking oats with milk and put it on the sweet potato.

Chop the banana and put it on the oatmeal.

Add an appropriate amount of cranberries.

Beat three small eggs, mix well, pour into the mold, but don't fill it too full.

Put it in the oven and set it to bake at 200 degrees for 20 minutes.

It will eventually swell up.

Completed.

Demolded, rich in flavor.