Name: Pumpkin Nutella Cookie Bars
Yield: 16 bars
Ingredients: 1/2 cup unsalted butter (melted); 1/3 cup pumpkin puree; 3/4 cup dark brown sugar; 1/4 cup granulated sugar; 1 egg yolk; 1/2 teaspoon baking soda; 1/2 teaspoon salt; 1/2 teaspoon ground nutmeg; 1/4 teaspoon ground ginger; 1/4 teaspoon ground allspice; 1 teaspoon ground cinnamon; 1 teaspoon vanilla extract; 1 3/4 cups all purpose flour; 3/4 cup Nutella (or other chocolate spread)