Ingredients

• Baking spray with flour

• 2 ½ cups (about 10 5/8 ounces) all-purpose flour

• 1 tablespoons baking powder

• 1 teaspoon kosher salt

• 1 teaspoon ground cinnamon

• ½ teaspoon ground nutmeg

• ¼ teaspoon ground allspice

• 2 large eggs

• 1 cup canned pumpkin (from 1 [15-ounce] can)

• 1 cup mashed bananas (from 3 small [about 4 1/2 ounces each] bananas)

• ¾ cup (6 ounces) unsalted butter, melted

• ¾ cup granulated sugar

• ½ cup packed light brown sugar

• 1 teaspoon vanilla extract

• 3 large eggs

• ¾ cup whole milk

• 1 tablespoon granulated sugar

• 1 teaspoon vanilla extract

• ¼ teaspoon ground cardamom

• ⅛ teaspoon kosher salt

• 6 tablespoons (3 ounces) unsalted butter, divided