On your cutting board, sprinkle garlic with salt and olive oil. Using the flat side of a chef's knife, smear garlic against the cutting board. Scrape back together into a small pile, and repeat until garlic forms a smooth paste. (Or, do this in a mortar and pestle.).
Stir garlic, parsley and basil into butter. Season with salt and pepper.
Cut off ends of baguette. Slice horizontally. Smear both cut surfaces generously with herbed butter. Place on foil-lined baking sheet. Bake in preheated 350°F oven 10-15 minutes until butter is melted, bread is hot, and edges are crispy.