Homeade Oreo Cookies

For the Dough
1 cups Dutch-process cocoa powder
11/2 cups all-purpose flour, plus more for dusting
1/4 teaspoon salt
2 sticks unsalted butter, softened
2 cups granulated sugar
2 large eggs
1 teaspoon vanilla extract

For the Filling:
1 stick unsalted butter, softened
1/2 cup vegetable shortening
3 cups confectioners' sugar, sifted
1 teaspoon vanilla extract

Directions

Prepare the dough: Sift together the cocoa powder, flour and salt in a large bowl.

Using a mixer, cream the butter and sugar. Add the eggs one at a time, then the vanilla, incorporating each ingredient before adding the next. Add the dry ingredients and mix just until incorporated, scraping the bottom of the bowl with a rubber spatula.

Using a 2-inch round cutter, cut the dough into 64 circles. (You can reroll the scraps once.) Place the cookies about 2 inches apart on ungreased baking sheets and chill for 20 minutes. Preheat the oven to 325.

Bake the cookies until they are set and slightly darker around the edges, about 20 minutes. Cool completely on wire racks.

Meanwhile, prepare the filling: Using a mixer, cream the butter and shortening until fluffy. Beat in the confectioners' sugar and vanilla.

Flip half of the cookies upside down and top each with 1 level tablespoon of filling. Press the remaining cookies on top to make sandwiches.