Lay out one tortilla and spread a layer of peanut butter evenly over the surface.
Add a layer of Nutella or chocolate spread over the peanut butter.
Peel the banana and place it at one end of the tortilla, then tightly roll it up.
Slice the rolled tortilla into sushi-sized pieces.
Press mini chocolate chips into the sides or tops of the slices for decoration.
Top with candy eyes or Halloween sprinkles for a spooky finish.
Repeat with the second tortilla and banana.