Optional: Toasted French bread baguette slices, baked pita chips or assorted fresh vegetables
Preheat oven to 450°. Brush an 8-in. cast-iron or other ovenproof skillet with 1 tablespoon butter; set aside. In a large bowl, beat cream cheese and mozzarella, fontina, cheddar and Parmesan cheeses with garlic, rosemary, thyme, pepper and remaining 2 tablespoons butter until combined. Spread into prepared skillet. Bake until bubbly and golden brown, 15-20 minutes. Serve with baguette slices, pita chips or vegetables as desired.