Follow recipe on crepe mix box, adding vanilla extract and sugar. Stir well. Add milk to the batter until it reaches the consistency of heavy cream. Heat a large pan and coat with butter. Pour 1/2 cup of crepe batter and tilt pan until bottom is evenly coated. Cook both sides until lightly browned. Wrap each crepe in damp paper towel and keep in the oven while cooking the remainder of the crepes.
Spread nutella evenly on crepe. Lay bananas flat covering 1/2 of the crepe, then fold. Add strawberries on top. Add whipped cream and drizzle additional Nutella as desired.