Portabella Mushroom Casserole - cooking recipe

Ingredients

4 large portabella mushrooms, caps dark gills removed and halved, then sliced into about 1/2 inch slices
2 stalks celery, thirded lengthwise, then diced
1 (10 ounce) can Campbell's Golden Mushroom soup
1/3 cup sour cream
1 -2 teaspoon Worcestershire sauce
salt and pepper
12 Ritz crackers, coarsely crushed
3/4 cup shredded extra-sharp cheddar cheese

Preparation

Mix all of the ingredients together except for 1/4 c cheese and half of the Ritz.
Put in a greased 8x8 pyrex and cook at 400degrees for about 30 minutes.
Put the rest of the cheese and the crackers on top and cook until crackers are golden (about 5 minutes).