White Bean & Avocado Sandwich

White beans mash seamlessly into a creamy protein-packed spread for a satisfying healthy sandwich that makes for an easy lunch or dinner. Mix it up by trying it with canned chickpeas or black beans. This vegetarian sandwich recipe is also a fiber superstar: avocado, beans, greens and whole-wheat bread team up to give it 15 grams of fiber, more than half of what most women should aim for in a day.