A lot of questions pop up about pumpkin pie vs sweet potato pie. Many people think the two are interchangeable because they are similar in look and taste. They are both orange with a smooth and creamy texture because of their custard base.  While some recipes say you can just swap out pumpkin for sweet potato, if you want a classic of either of these pies, you should follow a recipe specifically for a vegan pumpkin pie!  Pumpkin is bland compared to sweet potato, which has a naturally sugary, bold flavor. For that reason, spices are abundant in pumpkin pies. The blend of spices is often different as well.