Bring broth to a boil in a saucepan; add lima beans. Return to a boil; cover, reduce heat, and simmer 15 minutes or until tender. Stir in peas and 1/2 teaspoon sugar; cook 2 minutes. Drain.
Sauté pine nuts in 2 tablespoons butter in a large skillet over medium heat until golden. Add bean mixture, green onions, and next 3 ingredients; cook 1 minute or until thoroughly heated. Stir in remaining 3 tablespoons butter until melted.