#### For the Red Velvet Cakes:
**Preheat Oven:** Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper or silicone mats.
**Mix Dry Ingredients:** In a medium bowl, whisk together the flour, cocoa powder, baking powder, baking soda, and salt. Set aside.
**Cream Butter and Sugar:** In a large bowl, beat the butter and sugar together until light and fluffy. Add the egg and vanilla extract, mixing until combined.
**Add Buttermilk and Food Coloring:** Gradually mix in the buttermilk and red food coloring.
**Combine:** Slowly add the dry ingredients to the wet ingredients, mixing just until combined.
**Scoop and Bake:** Using a cookie scoop or tablespoon, drop dollops of batter onto the prepared baking sheets, spacing them about 2 inches apart. Bake for 10–12 minutes, or until the tops are set. Let the cakes cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely.
#### For the Cream Cheese Filling:
**Mix Filling:** Beat the cream cheese and butter together until smooth. Gradually add the powdered sugar and vanilla extract, mixing until creamy.
#### Assemble the Whoopie Pies:
Pair similar-sized cakes together. Spread or pipe the cream cheese filling onto the flat side of one cake and sandwich it with another.