Make the cookie dough
Scoop cookie dough onto prepared cookie sheet. Roll into some sugar
Add indentations to cookie dough balls using your thumb or the back of a rounded measuring spoon
How to Make Thumbprint Cookies
Bake for 11-13 minutes
Repeat indentation steps
Allow to cool completely before filling
How to Make Lemon Curd
Mix egg yolk, egg, sugar, lemon juice and zest
Transfer to a saucepan and cook until mixture is thick and coats the back of a wooden spoon
Pour through a fine-mesh sieve and allow to cool
Fill thumbprint cookies with lemon curd.
Making Ahead
Lemon curd cookies can be stored in an airtight container in a refrigerator for up to 3 days.Unfilled baked cookies can be stored in an airtight container at room temperature for 2 days. They can be filled before serving.