Savory tart with mushrooms and chicken

Ingredients

• 175 g hard flour 
• 175 g soft flour 
• 175 g butter 
• 2 egg yolks
• 75 g water
• 7 g salt
• 7 g sugar
• 500 g white mushrooms
• 1 large onion
• 3 tbsp. "Lof" Extra Virgin Olive Oil
• Salt & pepper
• 200 g feta cheese, grated by hand
• 150 g Graviera cheese, grated
• 2 eggs
• 1 chicken breast

Execution

• Start with the dough by sifting the flours.
• In the mixer bowl, add the butter and the flours and beat until they become lumpy.
• Add the eggs one by one. Add the water, salt and sugar and beat until the mix is homogenized. 
• Wrap the dough in cling film and leave it in the fridge for at least one hour.
• Roll out the dough, divide it in 2 and place one piece on a well buttered tart pan.
• Preserve the other piece in the refrigerator or in the freezer.
• Pierce the bottom of the tart in multiple spots and cook for 8-10 mins or until golden brown, in a preheated oven at 180°C.
• For the filling, finely chop the onion and sauté it in olive oil for 4-5 mins. 
• Add the mushrooms, thyme, salt and pepper and sauté for 10-12 mins, until they expel all their fluids.
• Move to a bowl and let it cool off.
• Add the mushrooms, the chicken (cut by hand), the cheeses and the eggs and mix well.
• Move the filling in the tart pan and cook in a preheated over at 180°C for 30-40 mins.
• Let it cool off and serve.