
Melt the butter in the microwave or in a small saucepan over low-medium heat until it reaches room temperature. Mix the granulated sugar and lemon zest together.
Whisk together the melted butter, sugar, and zest, then add the egg and vanilla until combined.
In a separate bowl, combine dry ingredients, then mix with wet ingredients until combined.
Scoop out and shape the cookie dough, chill for 30 minutes, then bake for 10-11 minutes.
Make the cheesecake frosting and pipe it onto the cooled cookies before serving.