Knead flour, 2 eggs, 1 teaspoon salt, cold butter in pieces and about 3 tablespoons cold water first with the mixer and then briefly with your hands. Chill for 30 minutes.
Clean and wash broccoli and cut into florets, cover and sauté in a little boiling salted water for about 3 minutes, then drain. Finely dice the onions and garlic, wash the tomatoes and cut into wedges.
Heat the oil in a pan, sauté the onions and garlic, add the tomatoes and oregano, season. Quarter the olives, crumble the cheese.
Roll out the dough in a greased pan and press 2-3 cm high on the edge, prick the base several times, sprinkle with breadcrumbs. Spread the broccoli, cheese, olives and tomato mixture on top.
For the topping, mix the quark, milk, 6 eggs, salt and pepper, pour over the vegetables. Bake in a preheated oven at 175 degrees (convection) for about 60 minutes.