Sebzeli Börek / Vegetable Pie

Ingredients:
1 Onion (sliced)
5-6 mushroom (sliced)
3 red pepper (cut into small pieces)
3 zucchini (cut vertically four pieces and cut into small pieces)
1 carrot (grate it)
1 potatoes (grate it)
1 small tomato (chopped)
4 garlic cloves (finely sliced)
1 bunch parsley (finely chopped)
1 cup olive oil
1 cup milk
4 spoon butter
1 egg
A pinch of salt

Cut all vegetables into pieces as in the pictures and saute them in a pan with olive oil in 10 minutes. Spread 1 full layer dough in tray as edge side coming out and put two more dough layers on it. In every layer wipe milk, olive oil and egg mix. Put all sauted vegetables on. Spread two layers dough on vegetables.  Wipe the mix between layers. Wipe the rest of the mix on the top dough. Slice around 4 spoon butter on the top and bake it 350F heated oven until the top is crisp golden brown.

I always use baking paper on the bottom of tray. Dough doesn't stick to the tray and also it is very easy to clean the tray.