Spinach and Mushroom Stuffed Cannelloni Dec 31, 1999 INGREDIENTS:1 lb. button mushrooms, sliced 8 oz. Spanish onions, diced 1 oz. olive ail 1 lb. frozen spinach, squeezed to remove moisture, chopped 2 Tbsps. garlic, chopped 2 Tbsps. dry basil 1 tsp. dry thyme leaf 1 tsp...