Peel the bananas and slice them into rounds. Set aside.

In a mixing bowl, whisk together the eggs, milk, and flour until you achieve a smooth batter consistency. Set the batter aside.

Heat a non-stick skillet or crêpe pan over medium heat.

Add a small amount of butter or use cooking spray to lightly grease the skillet.

Pour a ladleful of the batter into the skillet and swirl it around to coat the bottom evenly, creating a thin crêpe. Cook for about 1-2 minutes until the edges start to lift and the bottom is lightly golden.

Flip the crêpe and cook the other side for an additional 1-2 minutes until it's cooked through. Repeat this process with the remaining batter, stacking the cooked crêpes on a plate.

Spread a generous amount of Nutella or chocolate hazelnut spread onto each crêpe.

Place slices of banana over half of each crêpe.

Fold the crêpes in half and then into quarters, creating a triangular shape.

Dust the assembled crêpes with powdered sugar if desired.

Brew coffee according to your preference and pour into cups.

Serve the banana Nutella crêpes alongside a cup of freshly brewed coffee.