01 - Whisk together flour, sugar, and salt in a large bowl.
02 - Beat eggs in a separate bowl; then add milk, melted butter, and vanilla extract.
03 - Gradually whisk wet mixture into dry ingredients until smooth; let rest for 10 minutes.
04 - Warm an 8-inch nonstick skillet over medium heat and brush lightly with melted butter.
05 - Pour 1/4 cup batter into skillet, swirling to coat evenly; cook 1–2 minutes until edges lift and golden, flip and cook 30 seconds more; transfer to plate and repeat.
06 - Spread 1–2 tablespoons chocolate hazelnut spread over warm crepes and fold or roll as preferred.
07 - Sprinkle with chopped hazelnuts if using, dust with powdered sugar, and serve with fresh berries or banana slices if desired.