Chocolate Cookie Bars Recipe

5 from 1 vote

These quick and easy chocolate sugar cookie bars are a soft, chewy, chocolatey treat. Perfect for everything from birthday parties to bake sales, these cookie bars are made with a chocolate sugar cookie base and creamy vanilla buttercream frosting.

Prep Time10

Cook Time25

Total Time35

Course: Dessert

Cuisine: American

Servings: people

Calories: 347kcal

Author: The Carefree Kitchen

Ingredients

Chocolate Cookie Bars

1 cup butter room temperature
1½ cups sugar
1 teaspoon vanilla extract
2 cups all-purpose flour
1/4 cup cocoa powder
1 teaspoon baking soda
1 teaspoon salt
2 large eggs

Buttercream Frosting

8 ounces butter room temperature
3 cups powdered sugar
2 tablespoons milk
2 teaspoons vanilla extract

US Customary - Metric

Instructions

Chocolate Cookie Bars

Preheat oven to 325 degrees.
Add the butter, sugar, and vanilla into the bowl of a stand mixer and cream using the paddle attachment until light and fluffy, about 3 minutes. Add the eggs one at a time, scraping down the bowl as needed.
In a separate bowl, combine the flour, cocoa powder, baking soda and salt and whisk well, then add to the butter and egg mixture. Beat on low speed until well incorporated and no streaks of butter remain, but do not overmix.
Line a 9" x 13" baking sheet with parchment paper, or lightly spray with nonstick cooking spray. Press the cookie dough into the prepared baking pan, covering the bottom of the pan as evenly as possible.
Bake for 20-25 minutes, or until just barely golden. Remove from the oven and let cool completely.

Vanilla Buttercream Frosting

In the bowl of a stand mixer, cream together the room temperature butter using the paddle attachment until light and fluffy.
Add the milk and powdered sugar and mix on low speed until incorporated. Add the vanilla extract and mix again on low until incorporated. Increase speed and beat until the frosting is fluffy and spreadable.
Using an offset spatula, spread the frosting over the top of the cooled Chocolate Cookie Bars. Garnish the tops with your favorite sprinkles if desired. Cut into 20 square cookie bars. Enjoy!

Notes

Storing instructions: store cookie bars in an airtight container in the fridge for up to 1 week. Frosted cookie bars can be stored frozen for up to 1 month. Unfrosted cookie bars can be stored for up to 2 months.

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