Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper.

In a bowl, whisk together flour, cocoa powder, baking soda, and salt; set aside.

In a mixing bowl, cream together softened butter and sugar until light and fluffy.

Beat in the egg and vanilla extract; mix in red food coloring until combined.

Gradually add dry ingredients to the wet mixture until just combined—avoid overmixing.

Scoop dough onto prepared baking sheets about two inches apart. Bake for 10-12 minutes until edges are firm but centers remain soft.

Allow cookies to cool slightly before enjoying.