Cook pasta according to package directions until just done. Do not overcook or filling will leak out.
Cook asparagus until crisp tender, about 2 minutes on high, wrapped in a towel in the microwave. Cut into bite size pieces.
Brown sausage in a skillet and drain.
Brown mushrooms in a scant amount of sausage drippings.
When mushrooms are done return sausage and asparagus to skillet.
Sprinkle with half of cheese. Drizzle with half of cream. Season with basil paste and salt and pepper.
Cook and stir to melt cheese and to form sauce.
Pour a little cream in the bottom of a prepared baking dish. Lay half of the ravioli in dish.
Top with half the sausage mixture and a little of the remaining cheese.
Repeat layers and top with remaining cheese and drizzle with remaining cream .
Cover and refrigerate.
Bake uncovered at 325 for 25-30 minutes until hot and cheese is melted. Serves 4