Instructions

• 1. In a medium bowl, mix the butter and the confectioner's sugar until pale and fluffy. Add egg yolk and vanilla (optioanl) and mix well.
• 2. Add the sifted flour and mix well until combined.
• 3. Divide the dough equally in half. Here I add or coat with sweet potato powder, hazelnut praline powder, white chocolate chips and coarse sugar.
• 4. Shape each piece of dough into a disc or square shape (your choice) and wrap in plastic wrap. Chill until firm for about 1 to 2 hours.
• 5. Preheat the oven to 170 C degree.
• 6. Slice the cookies dough about 0.5cm thick and place on the baking sheet you prepared.
• 7. Bake the cookies for about 10-12 min or until the edges are lightly browned.
• 8. Let them cool a little bit on the baking sheets, then transfer to the tray to cool completely. Store in an airtight container.