Prepare the pasta dough and let it rest in the fridge for about 30 minutes.
In the meanwhile prepare the stuffing, mixing ricotta, parmiggiano, salt and pepper.
Cut the prawns (long side) season with thyme leaves, oil and keep on side.
When the dough is ready, with a rolling pin, spread it at 2-3 mm, make 4 squares of 4cm, and fill them, with one tea spoon of stuffing, add one square on top and seal it(If necessary use some water to seal the tortelli).
Cook the tortelli in plenty of salted water, in the meanwhile prepare the seasoning: put in pan olive oil with chopped garlic and pepper fillets, cook it for about 5 minutes and add salt. Mix in blender adding some butter.