Ingredients:

1 sachet of chemical yeast
4 eggs
125g softened butter
210 g of sugar
100 g of potato starch
180 g of flour
Powdered sugar
Zest of 1 lemon
Instructions:

Preheat the fan oven to 170°C.
Break the eggs into the blender glass.
Add the starch and sugar, then blend.
Incorporate the softened butter, the citrus zest and the flour with the baking powder.
Blend again.
Line a 24cm round baking tray with baking paper.
Transfer the dough to the pan and bake for about 40 minutes.
Leave to cool, turn out and sprinkle with icing sugar.
Your blender cake is ready to enjoy.