These beet and white bean sandwiches have a vibrant, creamy filling. Pickling the beets in rice vinegar and thyme leads to a tangy, herb-infused flavor. Making your own pickled beets also eliminates any added sugars that might be in a store-bought version. Combining the beets and beans with alfalfa sprouts, red onion and your favorite bread, these sandwiches are a satisfying plant-based lunch.