1. Prepare all the materials
2. Whip the butter with sugar, add coffee powder and mix
3. Add the egg yolk in two batches, mix and mix well
4. Sift in low-gluten flour and baking powder and mix well
5. Add yogurt and milk, mix and mix well
6. Mix well and put it into a piping bag
7. Squeeze into the baking tray
8. Put it in the preheated oven, 170 degrees for 25 minutes
9. After letting cool, put marshmallows on top of a slice, and bite it in the microwave on high heat for 15 seconds
10. Cover another piece
11. . Sprinkle with powdered sugar, if you like chocolate, you can coat it with chocolate
Tips:This amount is a little bit too much, it can bake more than 2 dishes~~
The temperature of the oven is subject to the temperature of your own oven
