Green Tea Cookies

• 3 ounces butter, softened at room temperature
• ¼ cup sugar
• 2 yolks

Preheat the oven to 375°F.

Put the softened butter in a bowl and whisk until creamy. Add the sugar in three batches, whisking each time until the mixture is fluffy. Add the egg yolks, one at a time, and continue mixing. Add ¼ cup of the flour, matcha tea powder, sen-c