Melt the butter in the microwave.Let it cool down for a minute or two.
Whisk toghether the eggs, milk, vanilla extract and sugar.
In another bowl, add the flour. Add the liquid mixture to the flour, little by little to avoid lumps. Whisk well.
Add the cooled melted butter.Mix well. The batter should be thin, lumpfree and flowy.
Heat a nonstick pan on medium heat. Brush it lightly with butter.
Pour a little batter in the middle and using circular motion, spread the batter till the pan is evenly coated.
Cook for 3-4 minutes till it turns golden brown.Flip and cook the other side for 1 minute.
Repeat for the rest of the batter.
Spread Nutella on one side of the crepe. Top it with sliced bananas.
Fold the crepe. Top with more fresh fruits, powdered sugar and nutella and serve!