Cut the butter into pieces. Knead flour, salt and butter until crumbly, then knead in 1 egg. Wrap the dough in foil and chill for about 1 hour
Clean the chanterelles, wash briefly but thoroughly and drain well. Clean, wash, halve and cut the peppers into very thin strips. Clean the leek, cut the upper 1/3 and wash. Cut leek into rings. Peel and finely chop the onion
Roll out the dough on a floured work surface until round (approx. 25 cm Ø). Grease a tart mould (approx. 23 cm Ø) and line with the dough. Fold the protruding edges inwards and press them firmly
Heat the oil in a pan. Sauté the chanterelles in it for about 2 minutes, then add leek, paprika and onions. Fry for 2-3 more minutes, season with salt and pepper. Put the vegetables into the tart. Grate the cheese and sprinkle over it
Mix 2 eggs and milk, season with salt, pepper and a little nutmeg. Pour egg milk over the filling and bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for 30-40 minutes until golden brown. Remove, remove from the mould and serve
Waiting time approx. 45 minutes