Triple-cheese pie

Name: Triple-cheese pie
Prep time: 20 min
Cook time: 38 min
Total time: 58 min
Cuisine: European
Ingredients: 1 tbsp olive oil; 6 golden shallots, finely chopped; 100 gm provolone piccante, coarsely grated; 100 gm Emmenthal, coarsely grated; 50 gm parmesan, finely grated; 1 tsp finely chopped oregano; 2 egg yolks mixed with 1 tsp water; Sea salt, to serve; Olive oil pastry; 400 gm plain flour (2⅔ cups); 60 gm butter, coarsely chopped; 60 gm extra-virgin olive oil (¼ cup)