Prep Time::35 mins
Cook Time::10 mins
Additional Time::15 mins
Total Time:: 1 hr
Servings::12
Yield::12 sandwich cookies
Ingredients
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Cookies:
¾ cup all-purpose flour
¾ cup graham cracker crumbs
½ teaspoon baking soda
¼ teaspoon baking powder
¼ teaspoon ground cinnamon
½ cup unsalted butter, softened
¾ cup white sugar, divided, or as needed
1 large egg yolk
½ teaspoon vanilla extract
Key Lime Cream Cheese Filling:
3 medium Key limes
1 (8 ounce) package cream cheese, softened
½ cup confectioners' sugar
Directions
Preheat the oven to 375 degrees F (190 degrees C). Line 2 baking sheets with parchment paper.
Combine flour, graham cracker crumbs, baking soda, baking powder, and cinnamon in a bowl.
Cream butter and 1/2 cup sugar together in a bowl with an electric mixer. Add egg yolk and vanilla; blend until combined. Mix in dry ingredients and continue to blend until dough sticks together, 1 to 2 minutes.
Roll dough into 1-inch balls and roll in remaining sugar to coat. Place on the prepared baking sheets.
Bake in the preheated oven until bottoms are lightly browned, 6 to 7 minutes. Cool on the baking sheets for 5 minutes before removing to a wire rack to cool, 8 to 10 minutes more.
Zest all 3 limes; set zest aside. Juice 2 of the limes.
Beat cream cheese in a bowl with an electric mixer until smooth. Mix in confectioners' sugar. Add lime juice and zest; mix to combine.
Spread filling on the flat sides of 1/2 of the cookies, then top with remaining cookies to form sandwich cookies.