Put 400 g flour, butter in flakes, salt, 125 g sugar, baking powder, 2 eggs, flaked almonds and 1 tablespoon cold water in a bowl. Knead first with the dough hooks of the hand mixer, then with your hands to a smooth shortcrust pastry. Wrap the dough in foil and chill for about 30 minutes
Grease the fat pan of the oven (approx. 32 x 39 cm) and dust with flour. Roll out the short pastry rectangularly (approx. 32 x 39 cm) on a floured work surface. Place the pastry in the fat pan and prick several times with a fork. Pre-bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for approx. 20 minutes
In the meantime, wash the lemons, grate them dry and grate the peel. Halve the lemons and squeeze them. Mix 60 g flour and 600 g sugar. Stir in 8 eggs, lemon peel and lemon juice. Pour immediately on the pre-baked base and bake in the preheated oven (electric cooker: 150 °C/ convection oven: 125 °C/ gas: see manufacturer) for approx. 25 minutes until the lemon topping is firm. Remove and let cool on a cake rack. Cut into approx. 5.5 x 8 cm pieces and dust with icing sugar
waiting time approx. 1 1/2 hours