– 1/2 cup unsalted butter, softened
– 1/2 cup brown sugar
– 1/2 cup granulated sugar
– 2 eggs, room temperature
– 1 tsp vanilla extract
– 1 1/2 cups cake flour
– 1 1/2 tsp baking powder
– 1/4 tsp kosher salt
– 1/2 cup milk
– 2 cups heavy whipping cream
– Peach jam for filling
– 1 peach, sliced for garnish