This post may contain affiliate links. Read my disclosure policy. Spanish Tortilla is a traditional Spanish dish consisting of layers of potatoes, onions, and eggs. It can be served as an appetizer, breakfast, brunch, or a light dinner. This recipe is a lighter version of the classic dish, as it uses less oil by partially cooking the potatoes in salted water first. The addition of a pimenton aioli enhances the flavors of this delicious tortilla. Learn how to make this Spanish favorite with step-by-step instructions and enjoy a taste of Spain in your own kitchen.