Preheat the oven to the lowest it will go - we are using it to keep the crepes warm between cooking and serving. About 100℉ is ideal.
In a large bowl, whisk together your ingredients to form a smooth batter. This can be covered and chilled overnight/until ready to cook.
Place a non-stick pan over a medium flame. Brush with a splash of melted butter/oil - use a pastry/basting brush, or use soaked kitchen towels.
Use a half cup measure or ladle to scoop the batter into the pan. Immediately tilt the pan around so the batter forms a thin layer across the bottom. It shouldn't be too thick - if it is, use less batter for the next pancake.
Wait until the pancake starts to loosen, then attempt to flip. Use a spatula to loosen the edges and flip. Cook another minute before removing the crepe - place on a plate in the oven to keep warm.
Serve with any toppings you like - whipped cream, lemon and sugar, Nutella - whatever you love!