Wash the potatoes and boil them covered with water. Cook potatoes for 25 minutes, drain and peel. Press potatoes while still hot through the potato press and let them cool down. Wash and clean the strawberries and let them drain on kitchen paper.
Cream fat, sugar, vanillin sugar and lemon peel. Fold in the potato mixture. Stir in the eggs one after the other. Mix flour and baking powder and stir into the potato mixture. Add milk and stir in.
Line the muffin tin (12 troughs) with paper cups. Spread the dough into the muffin cups. Press 1 strawberry in the middle of the dough. Bake in the preheated oven (electric: 200° C/ gas: level 3) for 25-30 minutes.
Remove the muffins and let them cool on a cake rack. Dust the muffins with icing sugar. Serve with vanilla sauce.