Ingredients

2 c. all-purpose flour

3/4 c. Dutch cocoa powder

1 tsp. baking soda

1/2 tsp. salt

1 1/4 c. unsalted butter

2 c. sugar

2 large eggs

2 tsp. pure vanilla extract

Preparation

Step 1Sift together flour, cocoa powder, baking soda, and salt. Set aside.Step 2In the bowl of an electric mixer fitted with the paddle attachment, beat butter, 2 cups sugar, and eggs on medium speed until light and fluffy, about 2 minutes. Add vanilla, and mix to combine. Gradually add dry ingredients, and combine with mixer on low speed. Cover bowl with plastic wrap, and chill until dough is firm, about 1 hour.Step 3Preheat the oven to 350 degrees. Line baking sheets with Silpat baking mats. Roll dough into 1-inch balls. Dip top of each ball into sugar. Place on prepared baking sheets about 1 1/2 inches apart. Bake until set, about 8 minutes. Cool on baking sheets for 5 minutes before transferring to a wire rack to cool completely.