Flatten bread slices with a rolling pin. Spread a thin layer of peanut butter on each slice and place banana slices on top.
Roll up bread slices tightly and secure with a toothpick.
In a shallow dish, whisk together eggs, milk, cinnamon, and vanilla.
Heat a skillet over medium heat and melt some butter.
Dip each bread roll in the egg mixture, ensuring it is fully coated.
Fry rolls until golden brown on all sides, about 2-3 minutes per side.
Serve warm with maple syrup.
