Clean, wash and finely grate the carrots. Sprinkle with lemon juice. Separate the eggs. Put the egg whites in a cool place. Cream egg yolk, sugar, salt, vanillin sugar, cinnamon and lemon peel with the whisk of the hand mixer.
Add almonds and nuts and stir in. Add flour, baking powder, oat flakes and carrots and stir in. Grease mould well. Beat the egg whites until stiff and mix half with the dough. Fold the remaining egg whites into the dough in portions.
Fill Easter baking tins approx. 3/4 with dough and bake in the preheated oven (electric: 200 °C/ gas: level 3) for 12-15 minutes. Remove from the oven and carefully turn out of the mould. Leave to cool on a rack.
Grease the mould again and fill in the remaining dough. Bake at the same temperature for 12-15 minutes, remove from the pan and allow to cool. Stir icing sugar and 1-2 tablespoons of water until smooth.
Decorate muffins with icing sugar icing. Serve as desired decorated with almonds, pistachios, sugar writing and sweets.