Ingredients
For the Lemon Cookies:
- 2 sticks unsalted butter, room temp
- Zest of 1 lemon
- 1 1/2 cups sugar
- 2 tbsp glucose
- 2 eggs
- 2 tsp clear vanilla extract
- 2 1/2 cups flour
- 2/3 cups milk powder
- 2 tsp cream of tartar
- 1 1/4 tsp kosher salt
For the Vanilla Frosting:
- 2 sticks unsalted butter, at room temperature
- 3 to 4 cups confectioners’ sugar, sifted
- 1⁄8 teaspoon salt
- 1 1/2 teaspoons vanilla bean powder (if you have it. If not, just use vanilla extract!)
- 2 tablespoons heavy cream
Instructions
Make the sugar cookies:
- Measure out your sugar into a small bowl, and zest the lemon into it. Massage the lemon zest into the sugar until it is well incorporated and smells strongly of lemon. This step is crucial!
- Combine the butter, lemon sugar, and glucose in the bowl of an electric mixer fitted with a paddle attachment and cream together on medium-high for 2-3 minutes.Scrape down the sides, add in the eggs and vanilla and beat for 7-8 minutes.
- Reduce mixer speed to low and add in the flour, milk powder, cream of tartar, baking soda, and salt. Mix just until the dough comes together – no longer than 1 minute. Scrape down the sides of the bowl.
- Using a 2 3/4 oz. ice cream scoop (1/3 cup measure) portion out the dough onto a parchment paper lined baking sheet – you should get 15-20 large balls of dough. Pat the tops of the cookie balls flat – wrap the sheet pan tightly in plastic wrap and chill for at least 1 hour or up to 1 week. Do not bake the cookies from room temp – they will not bake properly!
- Heat the oven to 350°F. Arrange the chilled dough at least 4 inches apart on the baking sheet and bake for 18 minutes – the cookies will puff, crackle and spread. The cookies should look lightly browned on the edges (golden brown on the bottom) – the centers will show just the beginning signs of color. If they haven’t reached that color yet, leave them in a for an extra minute or two. Cool the cookies completely on the sheet pans before frosting.
Make the frosting:
- In the bowl of an electric mixer fitted with the paddle attachment, beat the butter on medium speed until soft, about 1 minute.
- Add 2 cups of the confectioners’ sugar, the salt, and vanilla. Beat on low speed until the sugar is well incorporated.
- Add another 2 cups sugar and the cream. Add remaining 2 cups of sugar as needed to thicken the frosting. Beat on medium speed until the frosting is smooth and fluffy, about 4 minutes.
- Frost cookies generously. Fill a bowl with sprinkles. Place cookies frosting side down into bowl of sprinkles and press firmly to coat.
Notes
Cookies adapted from Momofuku Milk Bar; Frosting from Homemade Decadence