Put flour, 1/2 teaspoon salt and 2 tablespoons olive oil in a mixing bowl. Dissolve yeast in 200 ml of lukewarm water, add. Knead first with the dough hooks of the hand mixer, then with your hands to a smooth dough. Cover and leave to rise in a warm place for about 45 minutes. For the tomato sauce, finely dice 1 onion. Heat 1 tablespoon of oil, fry the onion in it. Add the herbs and steam briefly. Add tomato, season with salt and pepper and simmer for 10 minutes at low heat.
Wash and clean the spinach thoroughly. Blanch in boiling salted water for 1-2 minutes. Quench cold, drain. Season with salt and pepper. Clean and clean the mushrooms and cut them into slices. Cut ham into strips. Drain tuna. Peel 1 onion and cut into fine rings. Knead the dough once more. Divide into 4 pieces. Roll out each piece of dough to an oval tongue on a floured work surface. Place on two baking trays lined with baking paper. Put one tray in a cool place. Spread half the sauce on the two remaining pizza tongues. Cover with half of the spinach.
Knead the dough once more. Divide into 4 pieces. Roll out each piece of dough to an oval tongue on a floured work surface. Place on two baking trays lined with baking paper. Put one tray in a cool place. Spread half the sauce on the two remaining pizza tongues. Cover with half of the spinach. Cover with ham and mushrooms. Sprinkle with half of the cheese. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 15 to 20 minutes. In the last 5 minutes of the baking time, cover the other two tongues. Do the same with sauce and spinach. Pick up the tuna and cover the pizzas with it. Spread onion rings and cheese on top. Bake at the same temperature and time
Cover with ham and mushrooms. Sprinkle with half of the cheese. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 15 to 20 minutes. In the last 5 minutes of the baking time, cover the other two tongues. Do the same with sauce and spinach. Pick up the tuna and cover the pizzas with it. Spread onion rings and cheese on top. Bake at the same temperature and time
15 minutes waiting time