Pre-heat oven to 350 degrees. Line baking sheets with parchment paper.
With an electric mixer, cream together butter, both sugars, egg, milk, and vanilla until smooth. Add baking powder, baking soda, salt and mix well. Add cocoa powder and mix until combined.
Slowly add flour and mix just until combined. Using a cookie scoop, scoop tablespoonfuls onto prepared baking sheets. Bake 10-12 minutes. Remove from oven and immediately press a chocolate peppermint kiss into the center of each cookie. Cool on a wire rack.
Recipe by Sweet Dash of Sass at https://sweetdashofsass.com/2014/12/chocolate-peppermint-blossoms/