Ingredients

• 3 tablespoons unsalted butter

• 1 small white onion, chopped

• 1 garlic clove, minced

• 1 tablespoon firmly packed light brown sugar

• 1/2 teaspoon freshly ground cinnamon

• 1/4 teaspoon white pepper

• 1/4 teaspoon freshly ground nutmeg

• 1/8 teaspoon cayenne pepper

• 1 (15-ounce) can pure pumpkin puree

• 3 cups low-sodium vegetable broth

• Kosher salt

• 1/2 cup heavy whipping cream

• Crème fraîche, for garnish (optional)