01 -
Spread a thin layer of mayo just on one side of each piece of bread. Try to keep it even—doesn't have to be perfect.
02 -
Grab the sides with no mayo and slather each with your peanut butter. Go from edge to edge for full flavor hits.
03 -
Lay those banana rounds on top of the peanut butter, covering two slices totally. Taste some if you want.
04 -
Take the plain peanut butter bread and flip it over onto the banana-topped ones, keeping peanut butter sides touching the bananas. Now you've got two sandwiches ready to go.
05 -
Get your pan or griddle hot over medium. Set the sandwiches down mayo-side first. Let them sizzle for a couple minutes till they're golden underneath, then flip and do the same to the other side. When both sides are crispy and the inside's warmed through, they're done.