1-First, gather all your ingredients like salted butter, fresh oregano, minced garlic, olive oil, Italian-style bread, shredded mozzarella, tomato slices, sea salt, fresh mozzarella slices, and basil leaves. This setup ensures you can move quickly through the steps without any interruptions.

2-Next, make the garlic-butter spread by melting the ¼ lb salted butter with 2 sprigs of fresh oregano in a small saucepan over medium heat. Reduce the heat to low, stir in the 4 minced garlic cloves, and let it toast for 2-3 minutes. Remove from heat, discard the oregano, and whisk in the ¼ cup olive oil. Brush both sides of each of the 12 slices of Italian-style bread with this garlic-butter mixture.

3-Then, assemble the sandwiches by layering on the bottom slice of each: shredded mozzarella, tomato slices, a pinch of sea salt, fresh mozzarella slices, another pinch of sea salt, and basil leaves. Top with the second slice of bread to complete each sandwich.

4-Now, cook the sandwiches in a skillet heated over medium heat with a thin layer of olive oil. Place three sandwiches in the pan and cook until the bottom is golden brown and crisp, about 2-3 minutes. Drizzle a little more oil, flip the sandwiches, cover the skillet with a lid, and cook the other side until golden and the cheese is fully melted, another 2-3 minutes.

5-After cooking, transfer the sandwiches to a baking sheet and cover loosely with foil to keep them warm. Repeat the process with the remaining sandwiches. Finally, cut each sandwich in half, sprinkle lightly with flaky sea salt, and add fresh basil on top. Serve immediately, perhaps with a large garden salad for a complete meal.