Banana and caramel roulade

ingredients

For the cake:

4 large eggs

1 cup granulated sugar

1 cup all-purpose flour

1 teaspoon baking powder

1 teaspoon vanilla extract

a pinch of salt

For the stuffing:

2 ripe bananas, mashed

1/2 cup caramel sauce

For the filling:

1/2 cup caramel sauce

1 banana sliced