Cook the pasta (check the recipe). In the meantime, prepare the remaining ingredients.
Peel and finely chop the onion. Wash the mushrooms and slice them. Wash the bell pepper and dice it (remove inedible parts). Grate or finely chop the cheese.
Heat the butter in a pan. Add the onion and fry for a few minutes, stirring occasionally.
Then add the mushrooms and bell pepper. Fry again for a few minutes, stirring occasionally.
When all ingredients are soft, add the tomato concentrate and drained corn. Season to taste with salt, pepper, sweet and hot paprika, and Provencal herbs. Mix well.
Add the drained pasta and mix again.
Transfer to a small heatproof dish and spread cheese on top. Put into an oven preheated to 180 degrees Celsius.
Take out after a few minutes when the cheese has melted.