Set your oven to 160°C (320°F). This lower starting temperature is intentional. Lower heat allows your leftover bread to revive and warm through gently, which means the interior will soften and warm while the exterior begins to crisp. While your oven reaches temperature, gather your ingredients on the counter—this takes the stress out of cooking.

In a small bowl, combine your softened butter with the minced garlic and salt. Use a fork to mash these together until the garlic is evenly distributed throughout the butter. This is where the transformation starts. Fresh garlic releases its oils when minced, and the butter carries those oils throughout your bread. If your butter is too cold to mash easily, let it sit for a few minutes. You want a spreadable consistency, not melted butter.

Take your bread loaf and cut it horizontally into two halves, creating two flat surfaces. Spread your garlic butter generously over both cut sides, working from the center outward. Don't miss any patches—those bare spots will crisp differently than the buttered areas. This is hands-on cooking that feels good, the kind my mother taught me builds confidence in the kitchen. If your bread is particularly dry (and day-old bread often is), the butter will soak in immediately. That's perfect. It means your bread is absorbing moisture and flavor.

Place your buttered bread halves on a baking sheet, butter-side up. Bake at 160°C (320°F) for exactly 20 minutes. During this time, the bread warms through, the butter soaks in, and the edges begin to develop a light golden color. Walk away and start preparing whatever you're serving alongside this—a soup, a main dish, a salad. This 20 minutes buys you time.

After 20 minutes, remove the bread from your oven. Now comes the moment that makes this dish special. Increase your oven temperature to 200°C (390°F). While the oven preheats, distribute your grated mozzarella evenly over both bread halves. Don't just pile it in the center—spread it edge to edge. This ensures every piece gets that melted, bubbly cheese. If you're using pre-shredded cheese, it'll melt fine, but freshly grated cheese melts into a silkier, more cohesive layer. It's a small choice that makes a noticeable difference in the final dish.

Return the bread to your now-hotter oven at 200°C (390°F). Bake for 7 to 10 minutes, watching carefully after the 6-minute mark. The cheese should bubble at the edges and turn a light golden brown. This is not a time to walk away. Every oven runs differently—some might need only 7 minutes while others need the full 10. The moment the cheese bubbles visibly, you're done. Overcooked cheese becomes tough and separates.

Remove the bread from the oven and immediately sprinkle fresh parsley over the hot cheese. The heat will slightly wilt the parsley, releasing its oils and color. Let the bread rest for just 2 minutes—this helps it set. Using a sharp bread knife, cut the bread into pieces about 2 inches wide. Serve immediately while the cheese is still creamy and the bread is still warm. This is not a dish that waits. The magic is in the temperature contrast and the freshness. Serve it alongside your meal as a side that everyone will remember.