Step 1: Preheat your oven to 350°F (175°C).
Step 2: Prepare the pie crust according to package instructions or roll out your dough and chill it.
Step 3: Cream together the unsalted butter and brown sugar until light and fluffy.
Step 4: Add eggs one at a time, then mix in vanilla extract.
Step 5: Whisk together flour, baking powder, cocoa powder, and salt, then mix into the wet ingredients.
Step 6: Stir in white vinegar and red food coloring until the batter is uniformly red.
Step 7: Pour the filling into the pie crust and bake for 30-35 minutes.
Step 8: Beat cream cheese, sugar, and vanilla until smooth; fold in whipped cream.
Step 9: Spread cream cheese topping over the cooled pie.
Step 10: Chill for at least 2 hours before serving.