Mix 300 g flour and 1/2 tsp salt in a bowl. Dice 250 g butter, add it and grind it crumbly between your fingers. Add 2 eggs and nuts and knead with the dough hook of the hand mixer. Finally knead again briefly with your hands. Form the dough into a ball, wrap in foil and chill for approx. 30 minutes
Clean, wash and cut the leek into rings. Finely dice bacon. Heat the oil in a large pan, stir in the bacon and leave it crisp. Remove bacon. Add 25 g butter and leek and braise 4-5 while stirring. Season with salt and pepper. Dust with 20 g flour, sweat briefly and deglaze with cream, up to 1 tsp. Add bacon and let simmer for 2-3 minutes while stirring. Season to taste with salt, pepper and nutmeg. Let cool down for 20-30 minutes
Roll out 2/3 of the dough into a circle (32-34 cm Ø) on a lightly floured, large sheet of baking paper. Using the baking paper, turn the dough into a greased and lightly floured tart tin (28 cm Ø) and press it into the tin. Cut off any excess dough and prick the base of the dough several times with a fork. Place the mould in a cool place for about 10 minutes.
Roll out the rest of the dough on the baking paper and cut it into strips of approx. 1.5 cm wide and of different lengths. Separate 1 egg and mix the egg yolk with 1 tsp. cream. Whisk the egg white and 1 egg with a fork and stir into the lukewarm leek. Put the leek into the mould, smooth it down and cover it with the strips of dough in a grid pattern. Cut off any excess dough and press the ends of the strips well onto the edge. Bake in the preheated oven, bottom shelf (electric oven: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 45 minutes. approx. 10 minutes before the end of the baking time, brush the dough sticks and edges with egg yolk
On 16 pieces:
Waiting time approx. 10 minutes