Melt 20g butter. The remaining amount of the oil cool. Sift the flour, add salt. Pour a thin stream of water and melted butter.
Toss lightly, then knead the dough. Turn dough out onto floured surface and knead for 1 minute. Wrap in plastic wrap and place in refrigerator for 40 minutes.
Chilled butter roll a rolling pin to a thickness of 1 cm. Test did cross a deep knife cut.
Place the rolled out the oil in the center and fold the "petals", so that the oil is completely closed test.
Sprinkle the surface of the dough with flour, roll out and repel the mass into a rectangle.
Fold the rectangle into 3 times. Press the edges and roll again in the other direction. The resulting rectangle again fold 3-fold. Wrap in plastic wrap and refrigerate for 1 hour.
Divide the dough into two equal parts, roll it across the width of the pan.
Grease the pan with vegetable oil. Put him one piece of puff pastry.
Peel the potatoes, carrots and onions. Cut potatoes into cubes, carrot sticks, onion as finely as possible.
Lay out on the first layer of dough stuffing, distributing it evenly throughout the mass. Salt and pepper.
The next layer Put the chopped onion and carrot.
The third layer is a layer cake - potatoes. After all the filling is laid, it is necessary once again all the salt and pepper.
Cover the filling of the second part of the test. Simple tweaks secure the edges of the cake.
In a heated 180 degree oven insert pan with pie. After 10 minutes of cooking grease the cake with beaten egg. After another 20 minutes the dish is ready.