02Core the tomatoes and cut into 1/2-inch cubes.03Cut the prosciutto into very thin strips. There should be about 1 1/2 cups.04Pull off, if necessary, any tough ''strings'' from the pea pods. There should be about 2 cups of pea pods. Put them in a saucepan and add water to cover. Bring to the boil and simmer one minute. Drain.05Meanwhile, heat the oil in a large, heavy casserole and add the mushrooms, salt and pepper. Cook, stirring, about 3 minutes and add the garlic, jalapeno peppers and prosciutto. Cook, stirring, about one minute. Add the rosemary.06Add the capellini to 3 quarts of boiling water and stir so that the strands are submerged. Cook about four minutes or to the desired degree of doneness. Reserve 1/2 cup of the cooking liquid. Drain the pasta.07Add the tomatoes to the mushroom mixture and stir. Add the cream and bring to a boil. Add the pasta, pea pods and reserved pasta cooking liquid to the casserole and stir. Add the butter, 1/4 cup Parmesan cheese and shredded basil and toss to blend. Serve with additional Parmesan cheese on the side.