Preheat the oven to 180°C (356°F).
Soften the butter at room temperature.
Add sugar and cream together.
Gradually add eggs and mix well.
Sift cake flour and baking powder, then gently fold into the mixture.
Pour the batter into a pan lined with parchment paper.
Bake in the oven at 180°C (356°F) for 30-35 minutes.
Cool and remove from the pan.