- Preheat oven to 400°F (200°C). Place flatbread on baking sheet; spread with Béchamel sauce. Sprinkle with mozzarella cheese, mushroom mixture, parmesan cheese and roasted red peppers.
- Bake flatbread pizza until golden brown and cheese is bubbly. Sprinkle with basil, if using, before slicing and serving.
* Use a mix of mushrooms, including cremini, oyster and Portobello.