01 -
Arrange all bread slices on a flat surface. Evenly spread softened butter on one side of each slice to ensure a crisp exterior during grilling.
02 -
On the unbuttered side of four bread slices, spread roughly 2 tablespoons pizza sauce per slice. Distribute shredded mozzarella and arrange pepperoni slices on top. Lightly season each with garlic powder and Italian seasoning.
03 -
Top each assembled slice with a second slice of bread, buttered side facing outward, forming four sandwiches.
04 -
Heat a large skillet or griddle over medium heat. Grill sandwiches for 3 to 4 minutes on each side, pressing lightly with a spatula, until bread is golden brown and cheese has melted.
05 -
Transfer sandwiches to a cutting board. Slice in half and serve immediately, accompanied by additional warm pizza sauce for dipping.