Adapted from bing.com
# ground beef
small jar spaghetti sauce or I use left over spaghetti sauce
can spam grated
onion chopped fine or a hand full of dried onion
small can mushrooms
sliced American or cheddar cheese
The spam does not taste like spam when grated and mixed with the ground beef, it actually tastes like pizza!!!
Brown ground beef until no longer pink. Mix in all other ingredients other than the cheese and buns. Spoon mixture on open face bun and top with cheese slice. Bake in oven at 350 for 5-6 minutes or until cheese is melted.