Preheat oven to 400*F Cut the pointed top from the head of the garlic, leaving bulb intact but exposing individual cloves. Remove any loose papery coating. Place garlic, cut-side up, in an ovenproof 6-oz custard cup. Drizzle with 1-tsp olive oil. Cover with foil. Bake 20-25 minutes or until garlic is soft. Remove; let cool.
Squeeze garlic cloves into a food processor. Add the cannellini beans, lemon juice, olive oil, and salt. Blend until smooth.