Pasta Primavera with Fish

1/2 lb asparagus 1/4 cup unsalted butter 1/2 lb button mushroom , sliced 1/4 cup prosciutto , slivered 1 medium carrot , peeled and thinly sliced 1 medium[...]

kosher salt 1 lb penne or 1 lb farfalle pasta 1 lb medium asparagus spear , stems trimmed, cut into 1-1/2-inch lengths 1 large carrot , cut into matchsticks 1[...]

8 ounces gemelli pasta (short twisted pasta) or 8 ounces penne (tube-shaped pasta) 1 cup diagonally sliced thin carrot (1/4 inch) 2 cups diagonally sliced[...]