For best results, use a high-quality non-stick skillet or crepe pan. This will prevent the crepes from sticking and ensure they cook evenly. The crepe batter can be made ahead of time and stored in the refrigerator for up to 24 hours. Be sure to whisk it again before using. Feel free to customize the filling with your favorite vegetables, cheeses, or herbs. If you prefer a fully cooked egg, bake the crepes for a few minutes longer.