Preheat the Oven:
Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
Prepare Dry Ingredients:
In a medium-sized bowl, sift together the flour, cocoa powder, and salt. Set this mixture aside.
Cream Butter and Sugar:
In a large bowl, cream the softened butter and powdered sugar together using an electric mixer. Beat for about 3-4 minutes until light and fluffy.
Add Wet Ingredients:
Add the egg, vanilla extract, and buttermilk to the butter mixture. Beat until well combined. Add the red food coloring and mix until the dough reaches your desired shade of red.
Combine Wet and Dry Ingredients:
Gradually add the dry ingredients (flour, cocoa powder, salt) into the wet ingredients. Mix until a dough forms.
Shape the Cookies:
Using your hands or a cookie scoop, form small 1-inch dough balls. Roll them between your palms to smooth them out.
Bake the Cookies:
Place the dough balls on the prepared baking sheet, spaced about 2 inches apart. Bake for 12-15 minutes, or until the edges are set but the centers remain soft.
Cool and Coat in Powdered Sugar:
Allow the cookies to cool on the baking sheet for about 5 minutes. Then, roll each cookie in powdered sugar while they are still slightly warm. This helps the sugar adhere and gives them their "snowball" look.
Let the Cookies Cool Completely:
Transfer the cookies to a wire rack and let them cool completely. The powdered sugar will set as the cookies cool.