Make the Crepe Batter: In a mixing bowl, whisk together milk, egg, all-purpose flour, granulated sugar, and salt until smooth.

Stir in melted butter.

Prepare the Pan: Heat a non-stick skillet or crepe pan over medium heat. Add additional butter and let it melt, coating the pan.

Cook the Crepes: Pour about 1/4 cup of batter into the center of the skillet and quickly swirl it around to spread it thinly and evenly.

Cook for 1-2 minutes until the edges start to lift and the bottom is lightly golden. Flip and cook the other side for another 1 minute.

Transfer the cooked crepe to a plate. Repeat with the remaining batter, adding more butter to the pan as needed.

Assemble the Crepes: Spread peanut butter and chocolate sauce in the center of each crepe.Add a few banana slices.

Fold or roll the crepes.

Serve with a glass of milk on the side.