Half a sandwich makes a great post-exercise snack. Or enjoy a whole sandwich for lunch. Mix up a batch of the spread (it will keep in the refrigerator for several days), and make sandwiches as needed. The filling doubles as a tasty dip with apple wedges or strawberries.
Combine peanut butter and honey in a small microwave-safe bowl. Microwave at high for 20 seconds. Stir in banana, raisins, and sunflower seeds. Spread about 1/4 cup peanut butter mixture on each of 4 bread slices. Top with remaining bread slices.