1. Peel and wash sweetpotatoes, cut into cubes and boil them in a pot for 20 minutes. In the meantime, heat milk, whisk the egg and melt butter. Drain sweetpotatoes and mash them. Add whisked egg, 100 g soft sugar, vanilla sugar, 40 g melted butter and cinnamon. Then add the milk while stirring constantly.
2. Fill mass into a greased casserole. Chop pecans roughly and spread evenly over mass. Top with remaining soft sugar and remaining butter. Bake for 30 minutes in the preheated oven (electric oven: 200 ° C/ convection oven: 175 °C/ gas: 3rd degree).
Preparation time: approx. 1 hour