Preheat the oven to 325°F.
Line the bottom of a 9-inch round cake pan with parchment.
In a large bowl, cream the butter until smooth, then add sugars and beat until fluffy.
Add the egg and yolk, then the red wine and vanilla.
Sift the dry ingredients over the wet ingredients and mix until combined.
Spread the batter in the prepared pan and bake for 25-30 minutes.
Cool the cake in the pan for 10 minutes, then transfer to a cooling rack.
Whip mascarpone, cream, sugar, and vanilla until soft peaks form.
Dollop the topping generously on each slice of cake.
