Soften the butter and cream cheese at room temperature until smooth.
Add sugar and mix with a whisk.
Add the eggs one at a time, mixing well after each addition.
Sift the cake flour, golden cheese powder, and baking powder together, then fold in with a spatula.
Add milk and mix the batter evenly.
Pour the batter into a pound cake mold.
Bake in the oven at 180°C for 40–45 minutes.
Let cool and cut into serving pieces.