Pumpkin Upside-Down Cake With Caramelized Pears

Ingredients

• 3 tablespoons unsalted butter
• 1/3 cup packed brown sugar
• 2 Bosc pears
• 1/2 cup golden raisins
• 3 tablespoons dark rum
• 1 1/4 cups plus 1 tablespoon all-purpose flour
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 2 1/4 teaspoons ground cinnamon
• 3/4 teaspoon freshly grated nutmeg
• 1/4 teaspoon salt
• 3/4 cup unsalted butter
• 1 1/2 cups granulated sugar
• 3 eggs
• 3/4 cup pumpkin puree
• 2 cups heavy cream
• 3 tablespoons powdered sugar
• 1 1/2 teaspoons pure vanilla extract or vanilla bean paste