A melt in your mouth soft and cake-like, lemon infused cookie topped with a vibrantly lemony, sweet icing finish. A completely enjoyable cookie meant to be served year round!
In a large mixing bowl whisk together flour, baking powder, baking soda and salt.
In a separate large mixing bowl using an electric hand mixer blend together granulated sugar, butter and lemon zest until combined then increase speed to high and whip for about 1 minute until it's slightly pale and fluffy.
Mix in egg and egg yolk, then blend in 1 1/2 Tbsp lemon juice and the vanilla extract (mixture may look a little separated because of the acidity that's okay). If desired add a little natural yellow food coloring if you want a more yellow cookie.
Add flour mixture to butter mixture and mix on low speed until combined. Scrape down bowl and fold dough with a spatula a few times to ensure it's evenly combined. Spread dough out even.
Chill dough in fridge for 45 to 60 minutes until it's not so sticky to work with (chilling will also help the cookies spread less).
Preheat oven to 350 degrees during last 10 minutes of chilling cookies.
Line rimmed 18 by 13-inch baking sheets with parchment paper. Scoop dough out about 1 1/2 Tbsp each (28g) and roll into a ball (they should be about the size of a golf ball). Transfer 12 cookie dough balls to prepared baking sheet, spaced evenly apart**. Keep remaining dough chilled.
Bake in preheated oven until slightly under-baked in center, about 9 minutes. Let cool on pan 5 minutes then transfer to a wire rack to cool completely, repeat baking with remaining cookie dough.
Once cookies have cooled mix together powdered sugar with 2 1/2 Tbsp lemon juice. Glaze should have a medium, creamy thickness, drippy but not really runny. Either spoon glaze over cookies and spread into a circle, or pipe glaze from a small resealable bag with the corner cut.
Let glaze set before storing cookies.
Notes
*For a slightly less sweet cookie you can use 1 cup sugar. I like them either way.
**If you want cookies that are thinner and less puffy that spread more, then flatten dough balls slightly before baking.