Caramelized Onion and Sage Pumpkin Soup - Circulon Cookware

Ingredients

• 2 tablespoons of butter
• 2 large sweet onions, thinly sliced
• 2 tablespoons of packed brown sugar
• 1 tablespoon of balsamic vinegar
• 4 cups of chicken broth
• 1 (15-ounce) can of pumpkin
• 1/2 teaspoon of dried rubbed sage
• 1 teaspoon of salt
• 1/4 teaspoon of pepper
• Sour cream if desired, to taste
• Fresh sage leaves, if desired