In 2-quart saucepan, heat oil over medium heat. Cook onion in oil 5 minutes, stirring occasionally, until softened. Stir in garlic, curry powder, salt, gingerroot, black pepper and red pepper. Cook and stir 1 minute. Stir in pumpkin, half-and-half and broth. Cook 4 minutes longer. Remove from heat; cool 5 minutes.