Ingredients
2½cupsall-purpose flour,spoon and leveled
1½tspbaking powder
¼tspsalt
¾cupbutter,(1½ sticks) unsalted, softened to room temperature
¾cupgranulated sugar
¼cuplight brown sugar,or dark brown sugar, packed
1large egg,at room temperature
1½tsppure vanilla extract
2tsplemon zest
2tbspfresh lemon juice
¼cupmilk
2cupsfresh blueberries,(about 1½ packages) or frozen
coarse sugar,optional
1½cupsconfectioners’ sugar,sifted
2tbspfresh lemon juice
2tbsphalf and half,or heavy cream or milk
Preparation
Whisk the flour, baking powder, and salt together in a large bowl. Set aside.
With a handheld or stand mixer fitted with a paddle or whisk attachment, beat the butter, granulated sugar, and brown sugar together on high speed for about 2 minutes until creamy.
Scrape down the sides and up the bottom of the bowl as needed.
With the mixer running on low speed, add the egg, vanilla extract, lemon zest, and lemon juice.
Beat on medium-high speed until combined. Scrape down the sides and up the bottom of the bowl as needed.
With the mixer running at low speed, slowly add the dry ingredients and milk.
Beat everything just until incorporated. Do not overmix. The dough will be very creamy, sticky, and thick.
With a spoon or rubber spatula, carefully fold the blueberries into the cookie dough. Handle with care because some may break a little.
Cover the dough tightly with aluminum foil or plastic wrap and chill in the refrigerator for 30 to 45 minutes and up to 2 to 3 days.
Preheat the oven to 350 degrees F.
Line 2 large baking sheets with parchment paper or silicone baking mats. (Always recommended for cookies.) Set aside.
Remove the cookie dough from the refrigerator. Scoop the cookie dough, about ½ tablespoons each, and place 3-inches apart on the baking sheets.
If desired, sprinkle each with a little coarse sugar.
Bake for 15-16 minutes or until a cookie springs back when lightly poked with your finger. (That’s how I test them!)
Remove from the oven and allow the cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely before glazing.
Whisk the confectioners’ sugar, lemon juice, and half-and-half together until smooth.
Add more confectioners’ sugar to thicken or more lemon juice or half-and-half to thin, if desired.
Spoon over the cookies.
If applied lightly, the glaze will set within a couple of hours.
