Pre-bake shells as instructed on box in order to crisp (only takes 3-5 minutes) and cool. Place nut butter in a small bowl and heat for 20 seconds, more if needed, until it can be drizzled from a spoon. Drizzle about 1/4 teaspoon into each shell.

In a separate bowl, combine pudding and whipped topping and gently fold to combine. Place mixture in a zip-top bag and snip the edge off. Pipe the mixture evenly into each shell. Slice about 8 slices off of the banana and then cut each slice in half.

Top each shell with banana and drizzle with 1/8 teaspoon caramel sauce. (1/8 teaspoon doesn't seem like very much, but it's perfect! Use a 1/4 teaspoon measuring spoon and use the caramel in it to drizzle over 2 shells at a time.)