Raisin Souffle Biscuits
1.
Put the butter at room temperature to soften, cut into small cubes, mix with sugar, and beat with a whisk (the volume becomes swelled and the color becomes lighter. I beat it at medium and high speed for 3 minutes). Add 3 egg yolks at a time (add one, completely Eat it with butter and add a second one)
2.
Sift in the flour and milk powder, put in the raisins, pour in the milk, knead it into a smooth dough, keep it in the refrigerator for 15 minutes (this is more convenient for shaping)
3.
Take out the dough, roll it into a 1cm rectangle (cut all around with a knife), cut into small pieces, pierce small holes in the top with a fork, and coat with egg yolk
4.
Preheat the oven 180 degrees, 15 minutes