(*) for a wide ovenproof dish of 2 liters, greased, enough for 4 people Heat oil, sauté onion. Briefly steam peppers and parsley, cool in a baking dish. Then mix in thon and crème fraîche, season.
Shape into cannelloni: Unroll pasta dough, spread some of the filling evenly on each long side, roll up tightly. Cut into pieces about 6 cm long, layer in the prepared mold.
Sauce: bring cream and soup to a boil, reduce heat. Stir in tomato puree, simmer five minutes, season sauce, pour over cannelloni. Sprinkle with cheese.
Cooking au gratin: about thirty minutes in the middle of the oven heated to 200 degrees.