Preheat your oven to 350°F (175°C) and prepare your baking pans.
In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy.
Add the eggs, one at a time, mixing well after each addition.
Mix in the buttermilk and vanilla extract until combined.
In a separate bowl, whisk together the flour, cocoa powder, and baking soda.
Gradually add the dry mixture to the wet ingredients, mixing until just combined.
Stir in the red food coloring until you achieve the desired pink hue.
Divide the batter evenly between the prepared pans and smooth the tops.
Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted in the center comes out clean.
Allow the cakes to cool in the pans for 10 minutes, then transfer to wire racks to cool completely before frosting.
