Need a starter soup for your Thanksgiving meal? All of these autumn and fall soups would be perfect for Thanksgiving. They feature fresh fall harvest vegetables, such as sweet potatoes, sweet corn, pumpkin, apples or squash. Easy and healthy Thanksgiving soup recipes to enjoy any time this fall or autumn, including harvest soups, apple soups, butternut squash soups, pumpkin soups and more. Each of these healthy soup recipes is vegetarian, and many are vegan as well.