Heat oil in a large saucepan over medium heat. Sauté onion and garlic until golden brown. Stir in red pepper flakes, tomato sauce, hot water, parsley, salt, pepper and paprika. Bring to a boil, reduce heat and simmer for 30 minutes. Gently stir in fava beans. Remove from heat and let stand for several minutes to allow flavors to blend.
Makes 8 servings.