This classic potato and onion 'omelet' is eaten all over Spain. This version includes roasted red peppers and Spanish serrano ham. Since it's served at room temperature, this delicious starter can be made well in advance of your guest's arrival.
Assemble the ingredients the night before, and bake this casserole in the morning. Stand back and wait for the compliments. I've made it with fat free cottage cheese, egg substitute, and reduced fat sausage; the taste is still wonderful!