1. Boil and drain the Napolina Gluten Free Red Lentil Penne following packet instructions.
2. While the pasta cooks, heat the Napolina Olive Oil in a large pan and cook the onion, mushrooms and peppers over a high heat for 5-6 mins, until softened. Add the garlic and cook for 1 min, then stir in the Napolina Chopped Tomatoes, vinegar, Napolina Tomato Purée and chilli flakes. Cook for another 5 mins to thicken.
3. Stir the pasta into the sauce. Let it simmer for 2 mins, then spoon into a baking dish. Sprinkle over the cheese and breadcrumbs and grill for 5 mins, until the top is golden and bubbly.