To make these cookies, you'll need the following ingredients: * 1 cup softened butter * 3/4 cup granulated sugar * 1 teaspoon vanilla extract * 2 eggs * 1 cup all-purpose flour * 1/3 cup cocoa powder * 1/4 teaspoon baking soda * 1/8 teaspoon salt * 1 cup semisweet chocolate chips * 1/4 cup chopped walnuts (optional)
Once you have all of your ingredients, you can start baking. Preheat your oven to 350 degrees F (175 degrees C). Then, line a baking sheet with parchment paper. In a large bowl, cream together the butter and sugar until light and fluffy. Beat in the eggs and vanilla extract. Gradually add the flour, cocoa powder, baking soda, and salt, mixing until just combined. Stir in the chocolate chips and walnuts, if desired. Drop the dough by rounded tablespoonfuls onto the prepared baking sheet. Bake for 8 to 10 minutes, or until the cookies are set and the edges are just beginning to brown. Let the cookies cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely. These cookies are best enjoyed fresh from the oven, but they can also be stored in an airtight container at room temperature for up to 3 days.