Step 1

Place a skillet over medium heat.

Step 2

Add butter, vanilla extract, brown sugar, salt, cinnamon, and spiced rum to the skillet.

Step 3

Stir until the sugar is melted and the mixture is well combined.

Step 4

Add walnuts and sliced banana to the skillet.

Step 5

Cook for two minutes, allowing the flavors to meld and the banana to soften.

Step 6

Serve the sauce over prepared crepes.