01 - Arrange the bread slices on a clean surface. Evenly distribute pizza sauce onto one side of each bread slice.
02 - Evenly sprinkle dried oregano over the sauced bread. If using, add crushed red pepper flakes.
03 - On two of the prepared bread slices, carefully layer the mozzarella and provolone cheeses. Distribute the dried pickle slices evenly over the cheese.
04 - Sprinkle the grated Parmesan cheese over the pickle layer. Top each sandwich with a second bread slice, ensuring the sauce-side faces inward.
05 - Generously apply softened butter to the outside surface of each assembled sandwich, covering both sides.
06 - Heat a nonstick skillet or griddle over medium heat. Carefully place the buttered sandwiches into the heated skillet. Cook for approximately 3 to 4 minutes per side, applying gentle pressure with a spatula, until the bread achieves a golden-brown hue and the cheese is thoroughly melted.
07 - Remove the grilled sandwiches from the skillet and allow them to rest for 1 to 2 minutes. Slice in half and serve immediately while hot.