Cut off and discard top third of garlic bulb; drizzle with 1/2 tsp. oil. Wrap completely in foil.
Bake at 400F for 40 minutes or until garlic is tender. Cool completely.
Squeeze garlic pulp from bulb.
Place in blender container with beans, remaining 1 Tbsp. oil and water; cover. Blend using pulsing action and scraping side of container until well blended.