1. Put flour, baking soda and salt in a bowl and mix well, set aside;
2. Slice the butter in the microwave for 30 seconds on medium-high heat, let cool and set aside;
3. Put the butter and all the sugar into the blender, and use a fan-shaped stirring rod to stir at medium speed until fully integrated;
4. Add eggs and egg yolks and continue to mix well;
5. Add vanilla extract, turn to medium and low speed and continue to stir;
6. Add the flour mixture and stir at low speed until there is no dry powder at all; finally add the chocolate chips and stir for 30 seconds;
7. Divide the dough into 18 equal parts, round the palms and divide them in half, and then form a dough to keep the rough cut surface on the surface;
8. Put it in a preheated oven at 160 degrees Celsius and bake for about 16 minutes;
9. Bake out, let cool and eat.
Tips:During the roasting process, the upper and lower plates need to be reversed so that the 2 pans of pie will be evenly baked; in summer, the butter can also be softened at room temperature.
