Gather all your ingredients.

Place a non-stick skillet or griddle over medium heat.

Take two slices of bread and spread a generous amount of pizza sauce on each.

Sprinkle half of the mozzarella cheese on one slice, followed by the pepperoni, and top with the remaining cheese.

Top with another slice of bread, creating a sandwich.

Brush the outside of the sandwich with olive oil.

Place the sandwich in the heated skillet and cook for about 3-4 minutes on each side or until golden brown and the cheese is melted.

Once cooked, remove the sandwich from the skillet and let it cool slightly before slicing it in half.