1/4 teaspoon butter flavoring (sold by other flavor extracts)
2 tablespoons fresh lemon juice
zest of one lemon
sparkling sugar
Instructions
Preheat oven to 350 degrees.
In a medium bowl, whisk together flour, baking powder, baking soda, salt and cornstarch and set aside.
In the bowl of an electric mixer, cream together butter and sugar on medium speed.
Add egg and egg yolk and mix until well incorporated. Add vanilla extract, butter flavoring, lemon juice, and zest and mix.
Turn speed to low and gradually add the dry ingredients to the wet ingredients.
I used my 1 1/2 tablespoon size scoop to make 24 dough balls. Dip the top of each dough ball in sparkling sugar and placed them 9 at a time on Silpat lined baking sheet. These cookies will spread when baking.