Lemon sugar cookies with creamy lemon frosting and an added boost of tang from the tiniest slice of lemon on top of each cookie. These are literally the BEST lemon sugar cookies.
In a large mixing bowl combine butter, shortening and sugar. Beat until fluffy.
Turn mixer down and add egg, vanilla and lemon zest. Add baking powder. Sift in and flour and cornstarch until mixed thoroughly (1-2 minutes).
Scoop dough, using a medium cookie scoop, onto ungreased baking sheets. Roll each scoop of dough into a ball.
Press a glass into each cookie dough ball to flatten. Dip glass in sugar to keep the glass from sticking to the cookie dough.
Bake cookies for 10 minutes. Allow to cool on pan 3-5 minutes before transferring to cooling rack.
Allow cookies to cool completely before frosting.
Frosting
Mix frosting ingredients with electric mixer. Spread over cookies.
Cut a lemon into tiny slices. Place one slice of lemon on each cookie.
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Notes
You will need 3 lemons for this recipe.If using salted butter, no additional salt is necessary for the cookie dough. If using unsalted butter, add a ½ teaspoon of salt with the dry ingredients in the cookie dough.Cookies can sit be left out at room temperature for 24 hours or so. If storing longer, wrap cookies, and refrigerate to keep lemon slices fresh.