Preheat oven to 400°. In a medium bowl, mix butter with a fork until smooth. Add prosciutto, parmesan, pine nuts, garlic, and chopped basil and mix until blended.
Spread mixture on baguette slices and arrange slices on baking sheets. Bake until bottom of bread is toasted, 8 to 10 minutes.
Cool 5 minutes, then garnish with small basil leaves or bits of larger leaves.