Käse-Pie mit Schinken und Zucchini

2 rolls (à 270 g) puff pastry, 2 small zucchini (about 250 g), 2 tbsp oil, salt and pepper, 200 g Gruyère cheese, 1 egg, 2-3 tbsp mustard, 200 g cooked ham , thinly sliced

Take puff pastry from the refrigerator and let it rest for about 10 minutes. Wash, clean and coarsely grate zucchini. Heat oil in a pan. Sauté zucchini in it. Season with salt and pepper, let cool slightly . Cut cheese into thin slices. Whisk egg .
Unroll dough. Lightly press dough sheet in an oval shape. Spread a little egg on the edge of the dough. Spread the mustard on the dough. Distribute ham , zucchini and cheese on the mustard cream. Preheat the oven (electric oven : 225 ° C ).
Put the second sheet of dough over the filling, press it to adjust the shape of the top of the lower sheet of dough. Spread over the rest of the egg. Cook it for 15 minutes in the oven. Allow to cool briefly, then cut into pieces and serve.