Peanut butter sandwiches can get really calorie dense rather quickly.
My go-to “energy sandwich” that I will eat before a day of surfing has crunchy peanut butter on both slices of bread, and dried apricots, cherries, cranberries, raisins, or banana slices, with some granola and a drizzle of maple syrup.
They’re delicious, and about 1000 calories per sandwich