Tomato-Mozzarella Gratin

Ingredients (10)

• ✓ 5 large tomatoes, sliced
• + 1 (8 ounce) ball fresh mozzarella cheese, thinly sliced add to pantry
• + ½ teaspoon dried oregano, or to taste add to pantry
• + ½ teaspoon garlic powder, or to taste add to pantry
• + 1 pinch herb salt, or to taste add to pantry
• + freshly ground black pepper to taste add to pantry
• + 2 tablespoons dry bread crumbs add to pantry
• + 2 tablespoons grated Parmesan cheese add to pantry
• + 2 tablespoons butter at room temperature, cut into cubes add to pantry
• + 1 tablespoon chopped fresh parsley, or to taste add to pantry