1 pkg. thawed Stouffer's spinach souffle
2 eggs
2 tsp. chopped onion
3/4 c. cooked crumbled Italian sausage
3 tbsp. milk
1/2 c. sliced drained mushrooms
3/4 c. grated Swiss cheese
9 inch pie shell

Mix together all ingredients. Pour into unbaked 9 inch pie shell and bake at 400 degrees for 25 to 30 minutes.