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Lemon cooler cookies on a white backround with lemon slices.

Lemon Cooler Cookies (Copycat)

These homemade lemon cooler cookies are light and soft, with a bright, zesty lemon flavor and a powdered sugar coating that melts in your mouth.
5 from 34 votes
Prep Time 15 minutes
Cook Time 10 minutes
chill time 1 hour
Total Time 1 hour 25 minutes
Course Dessert
Cuisine American
Servings 10 cookies
Calories 175 kcal

Ingredients
 
 

  • ½ cup Butter soft, unsalted
  • cup Granulated sugar
  • 1 Egg yolk
  • ¼ cup Powder sugar
  • 1 teaspoon Vanilla extract
  • 1 teaspoon Baking powder
  • teaspoon Kosher salt
  • 1 tablespoon Cornstarch
  • 1 ¼ cups Flour
  • 1 teaspoon Lemon zest Fresh
  • 2 tablespoon Lemon juice Fresh

Instructions
 

  • In a medium bowl, beat the softened butter, lemon zest, sugar, salt, and vanilla with an electric mixer until light and fluffy.
  • In a separate bowl, whisk together the flour, cornstarch, and baking powder until well combined.
  • Fold the dry ingredients into the butter mixture using a spatula. Mix just until no flour streaks remain—do not overmix.
  • Cover the bowl tightly and refrigerate for at least 1 hour. This prevents the cookies from spreading too much in the oven.
  • Use a small cookie scoop to portion 1 tablespoon of dough. Roll into smooth balls and place them on a parchment-lined baking sheet.
  • Gently press down on each ball with your palm to slightly flatten. Bake at 180°C (350°F) for 9–11 minutes until set but still pale.
  • Let the cookies cool slightly until warm to the touch. Roll them generously in a bowl of powdered sugar until fully coated, then serve!

Notes

  • Use Room Temperature Butter: Your butter should be soft enough to leave an indent when pressed, but not oily. This ensures it creams perfectly with the sugar for a light cookie.
  • Don't Skip the Cornstarch: This is the "secret" to the cooler texture. It breaks up the gluten in the flour to create a delicate, sandy crumb that dissolves on your tongue.
  • The Double-Coat Method: For a thick, snowy look, roll the cookies in powdered sugar while they are warm (not hot) so the first layer sticks. Once they are completely cool, roll them a second time for a professional finish.
  • Measure Flour Correctly: Avoid scooping flour directly with your measuring cup, which packs it down. Instead, spoon the flour into the cup and level it off with a knife to keep the cookies from becoming dry or cakey.
  • Fresh is Best: Always use freshly squeezed lemon juice and zest. Bottled juice can have a bitter aftertaste that overpowers the delicate butter flavor of these cookies.
  • Watch the Oven Closely: These cookies should stay pale and light. Do not wait for the edges to turn golden brown, or they will lose their signature soft texture.

Nutrition

Calories: 175kcalCarbohydrates: 23gProtein: 2gFat: 10gSaturated Fat: 6gPolyunsaturated Fat: 0.5gMonounsaturated Fat: 3gTrans Fat: 0.4gCholesterol: 44mgSodium: 194mgPotassium: 27mgFiber: 1gSugar: 7gVitamin A: 310IUVitamin C: 2mgCalcium: 32mgIron: 1mg
Keyword lemon cooler, lemon cooler cookies, lemon coolers, lemon powder sugar cookies
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