2 tbsp. butter
1 (4 oz.) can mushrooms, drained
2 (12 oz.) pkg. frozen spinach souffle, defrost
1/4 c. grated Cheddar cheese
1/4 c. chopped onion

Preheat oven to 350 degrees. Melt butter in small skillet; saute mushrooms with onion 5 minutes. Spoon defrosted spinach souffle into medium mixing bowl. Add sauteed mushrooms and onions; combine thoroughly. Pour mixture into 1-quart casserole. Sprinkle grated Cheddar cheese around edges. Bake for 35-40 minutes or until knife inserted in center comes out clean. Serve at once.