Peel the sweet potatoes, and cut into 2 cm cubes. Soak in water for a while. Transfer to a pot, and boil for about 15 minutes.
Drain the water, and mash with a masher. You can pound with a pestle, too!
Add the heavy cream, butter, egg yolk (save some for the glaze), and vanilla extract, then mix over low heat.
When the mixture becomes moist, let it cool a little while. Wet your hands, and form into your preferred shapes.
Brush the egg yolk on the surface for the glaze. You can just pour on top if you don't have a pastry brush!
Bake in the oven for 5-10 minutes, and it's done!
Story Behind this Recipe
Since I had lots of sweet potatoes, I tried making sweet potato bites, which I had made a long time ago. My family loved it.
The sweetness of the sweet potatoes depends on the kind, so taste first, then adjust the amount of sugar. You can also microwave the sweet potatoes! If you would like a smooth texture, pass the mixture through a strainer before Step 3. Mash the sweet potatoes as much as you can until they are no longer lumpy.