01 -
Heat the oven to 350°F (175°C). Line two baking sheets with parchment paper and unwrap all chocolate kisses before mixing the dough.
02 -
Beat the softened butter and granulated sugar in a large bowl for 1-2 minutes, until creamy and lighter in color.
03 -
Beat in the egg, milk, vanilla, and red food coloring until the mixture looks smooth and evenly red.
04 -
Whisk the flour, cocoa powder, baking soda, and salt in a separate bowl. Add to the butter mixture and beat on low just until no dry streaks remain.
05 -
Scoop tablespoon-size portions of dough and roll into 1-inch balls. Roll each ball in red sanding sugar and place 2 inches apart on the prepared baking sheets.
06 -
Bake for 8-10 minutes, until the tops are set and slightly puffed. Do not bake until browned or the cookies will lose their soft texture.
07 -
Cool the cookies on the baking sheet for 3-4 minutes. Gently press one chocolate kiss into the center of each cookie, then transfer to a wire rack to cool completely.