2 large cans Spam, grated
1 medium onion, chopped
hamburger buns
1 can cream of mushroom soup (undiluted)
1 c. grated cheese

Mix well in a large bowl the Spam, soup, onion and cheese. Spread mixture on both the tops and bottoms of buns. Place (open-faced) on baking sheet and toast in broiler until cheese melts and slightly browns. Serve hot.