Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Knead minced meat, ground pork, egg, breadcrumbs, 2 teaspoons pizza spice, 1 teaspoon salt and paprika each. Form 4 flat cakes (each approx. 15 cm Ø) and place on a baking tray lined with baking paper.
Bake in the oven for about 10 minutes.
Clean, wash and slice the mushrooms. Fry them in hot oil. Wash and slice the tomatoes. Clean, wash and chop the peppers. Dice cheese. Put everything on the flat cakes, season and bake for about 10 minutes more.
Garnish with basil.