Whisk together flour, sugar, and salt.
In a separate bowl, mix eggs, milk, butter, vanilla.
Gradually combine wet into dry to form smooth batter.
Let batter rest 15–30 minutes.
Heat pan, lightly butter, pour ¼ cup batter.
Swirl pan for thin crepe; cook 1–2 minutes.
Flip gently; cook other side 30–60 seconds.
Spread Nutella, roll or fold crepes, serve warm.