01 -
Spread softened butter evenly on one side of each bread slice to ensure a crisp, golden exterior.
02 -
Lay two slices of bread butter-side down and evenly sprinkle half of the shredded mozzarella over each unbuttered side.
03 -
Distribute sun-dried tomatoes, sliced Kalamata olives, and fresh basil leaves atop the mozzarella.
04 -
Sprinkle crumbled feta cheese and dried oregano, if using, over the vegetable layer.
05 -
Top with remaining mozzarella to help bind the fillings together.
06 -
Cover each sandwich with a second bread slice, buttered side facing out. Press gently to secure.
07 -
Heat a skillet or griddle over medium heat. Place sandwiches on the hot surface and cook for 2–3 minutes per side, pressing gently with a spatula, until bread is golden brown and cheese fully melts.
08 -
Cut each sandwich diagonally and serve immediately while warm.
09 -
Accompany with tomato soup, a crisp salad, or roasted vegetables for a complete meal.