500 gr sweet potatoes, peeled and cut into 2-inch chunks
3 eggs
150 gr sugar
50 gr brown caster sugar
150 ml sunflower oil
180 gr self-raising flour
pinch of salt
1 tsp cinnamon
1 tl mixed spice
1 tsp vanilla extract
100 gr chopped walnuts
Frosting
75 gr butter (room temperature)
100 gr mascarpone (room temperature)
50 gr powdered sugar