Let dough come to room temperature for easy slicing.
Infuse compound butter with lemon zest or chili flakes.
Substitute cheddar, fontina or gouda for mozzarella.
Add sliced black olives, mushrooms or bell peppers.
Make ahead by preparing through step 4, refrigerating 2 hours and baking later.
For quicker prep, use frozen garlic bread loaf instead of fresh bread. Thaw first before adding cheeses and toppings in slots.
