Liberally apply garlic butter to bread halves. Bake in oven until light golden brown. Remove and top with basil, sun-dried tomatoes and Parmesan.
Cut into 2-inch slices.
Slice the tops off the garlic heads, place in a piece of foil, drizzle olive oil, and season with salt and pepper. Place in oven and bake for 1 hour, or until soft.
Squeeze roasted garlic out into medium mixing bowl. Add remaining ingredients and thoroughly mix together, divide in half, and refrigerate.