This is the combination of 2 instructables: Almost sourdough bread and pickled onions.
WAIT don't give up on it yet! it is quite wonderful.
Start with your onions:
Then your bread:
Now for the combining:
2 slices of Almost Sourdough bread,
Some slivers of the pickled onions
6-10 slices of pepperoni
Freshly cut Muenster cheese
2 pats of butter
Nonstick frying pan
Put your Nonstick pan to heat.
On a slice of bread stack the cheese, then onions, then pepperoni. Cover with remaining slice of bread.
Put a pat of butter in the hot pan. Press the sandwich on top. Cook for about 2 minutes on medium heat.
Lift with a spatula, add the last pat of butter and fry the other side until a nice crust forms and the cheese is melted.