Quick Tortilla Pizza with Mushrooms & Bell Pepper

Preheat the oven to 180 °C (top/bottom heat).

In a small bowl, mix ketchup, olive oil, pressed garlic, oregano, and pepper into a smooth sauce and set aside.

Melt the butter in a large pan. Place one tortilla in the pan and sprinkle evenly with the grated cheese. Place the second tortilla on top. Once the bottom tortilla is golden brown and crispy, carefully flip the entire thing and briefly fry the other side until the cheese in between melts.