Prepare the ingredients: sweet potatoes, egg yolk, baby cheese, and olive oil.

Wash the sweet potatoes thoroughly under running water.

Steam the sweet potatoes for 20 minutes over medium heat.

Test the sweet potatoes for doneness with a fork or chopstick.

Peel the steamed sweet potatoes and mash them in a bowl.

Add the egg yolk to the mashed sweet potatoes and mix well.

Divide the mixture into 8 equal portions and roll each into a ball.

Cut each slice of baby cheese into 4 pieces, making 8 portions in total.

Flatten each sweet potato ball and place a piece of cheese in the center.

Heat a frying pan over low heat and add 2 tsp of olive oil.

Cook the sweet potato cheese pancakes until golden brown on both sides.