Preheat oven to 425°. Cut off pointed end of garlic; place garlic on a piece of aluminum foil, and drizzle with 1 Tbsp. olive oil. Fold foil to seal. Bake 30 minutes; let cool 5 minutes. Squeeze pulp from garlic cloves into a bowl.
Prepare lima beans according to package directions. Process lima beans in a food processor 30 seconds or until smooth, stopping to scrape down sides. Add roasted garlic, ricotta, basil, and lemon juice; pulse 2 to 3 times or until blended.
With processor running, pour 1/4 cup oil through food chute in a slow, steady stream, processing until smooth. Stir in salt and pepper. Serve with assorted fresh vegetables.