Peel potatoes, wash them, cut them into thin slices, and steam them in a steamer for about fifteen minutes. You can insert them with chopsticks to see if they are steamed soft.

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2

Steamed potatoes are put into fresh-keeping bags and rolled into mud with a rolling pin.

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three

Heat the pan and add the butter.

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four

After the butter melts, add chopped shallots, carrots and bacon, add appropriate amount of black pepper and stir well until the carrots are soft and ready to eat.

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five

Stir-fried ingredients are put out for use.

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six

Add the fried ingredients into the mashed potatoes, then add the milk according to the degree of dryness and wetness and mix well.

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seven

Mix well and pour into a baking bowl.

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eight

Spread a layer of mozzarella cheese crumbs on the surface, preheat the oven to 200 degrees, then bake the upper layer for about 10 minutes, and the cheese will melt and color.