The short answer is Yes! Pumpkin puree and applesauce have a very similar texture and are often used interchangeably. They both have about the same amount of moisture and are both also low fat. You can use the same amount of pumpkin puree in place of applesauce in this recipe. Just keep in mind that your dinner rolls will have an orange tint and a slight pumpkin taste. If you want to bring out that pumpkin flavor even more, add ½ teaspoon of ground pumpkin spice to the rolls when adding the flours.