01 -
Get a hearty bread like sourdough so your sandwich holds up.
02 -
Opt for good-quality cheese that melts easily, such as Gruyère or cheddar.
03 -
Cook the bacon to a crispy stage—it adds a nice crunch.
04 -
For sweeter onions, cook them slowly on low heat for about 20 minutes.
05 -
Spread mayo or butter thinly on the bread for that golden, crispy surface.
06 -
Cook slowly on medium-low heat for melted cheese without scorching the bread.
07 -
After cooking, let the sandwich sit a moment to stop the fillings from spilling out when slicing.