Asparagus Mushroom Casserole

1 onion, diced
12 ounces of fresh mushrooms, sliced
1/4 cup olive oil
saute onions and mushrooms in olive oil till tender,
about 5 minutes and add:

2 tablespoons flour
cook flour for a few minutes and add:

1 cup milk
1/2 cup sour cream
1 tablespoon chicken base or bouillon
salt and pepper to taste
cook till mixture starts to thicken, set aside.

in a separate skillet saute:

1 pound asparagus, fresh and cut into 1 inch slices
1 tablespoon olive oil
cook fro about 3 or 4 minutes or until crisp tender.

Add asparagus to above mixture and put in baking dish, cover with:

seasoned bread crumbs
bake at 350 for about 30 minutes or until crumbs start to brown