Peel and cut the onions into thin slices. Sauté the onion slices over medium to high heat, in 3-4 tablespoons of olive oil, for 20 minutes until soft. Cut tomatoes into small cubes and allow to strain in a sieve. Combine the onions, tomatoes, olives, 1 teaspoon of oregano and a pinch of salt. Prepare the Ladenies according to the instructions. Sprinkle with a little olive oil and bake on the lowest shelf of a preheated oven at 200°C for 25-30 minutes.

For making Stuffed Pizza Crust:
Lay 10 square shortcrust pastries on a baking tray. Brush them with tomato paste, sprinkle with oregano and cover each pastry sheet with another one. Slightly press the bottom and upper pastries’ edges to stick together.