01 -
Spread a thin layer of softened butter on one side of each bread slice. If you want extra flavor, sprinkle the buttered sides with Italian seasoning and garlic powder - this really makes the crust taste amazing.
02 -
Take two slices and work with the non-buttered sides. Spread a generous spoonful of marinara sauce on each, then pile on plenty of shredded mozzarella cheese. Top each with 4-5 slices of pepperoni, then place the remaining bread slices on top with the buttered side facing out.
03 -
Heat up a skillet or griddle over medium heat. Place your sandwiches in the pan with the buttered sides facing out. Cook for about 3-4 minutes on each side until the bread turns golden brown and crispy, and you can see that melty cheese oozing out the sides.
04 -
Remove from heat and let them cool for just a minute, then slice each sandwich in half diagonally. Serve right away while the cheese is still stretchy and hot, with extra marinara sauce on the side for dipping if you like.