Prepare to fall for this Easy saucy sandwich.
2 tbsp. butter
2 slices white or sourdough bread
1 tbsp. plus 2 tsp. pizza sauce
1 c. shredded mozzarella, divided
8 slices pepperoni, divided
1 tbsp. finely grated parmesan, plus more for garnish
1 fresh basil leaf
Crushed red pepper flakes, for garnish
Heat broiler. Assemble sandwich: Spread butter on the outside of two slices of bread. On the inside of one slice, spread 1 tablespoon pizza sauce, then top with 3/4 cup mozzarella, five slices of pepperoni, Parmesan, and basil. Top with remaining slice of bread, buttered side up.
In a large, oven-safe skillet over medium heat, cook sandwich until crispy, 5 minutes per side.
Spread remaining 2 teaspoons pizza sauce on top of sandwich, then top with remaining 1/4 cup mozzarella and remaining three pepperoni slices. Broil until cheese is melty and golden and pepperoni is crispy, 2 minutes.
Garnish with red pepper flakes and serve.