These very thin pancakes may be delicate, but they are surprisingly easy to make and can be prepared ahead of time. Using a blender ensures a smooth crepe batter that has the consistency of heavy cream. If not using immediately, stack cooked, cooled crepes with wax paper and refrigerate, up to 3 days.
As for the fillings, let your refrigerator, pantry, and even leftovers be your guide, then fold or roll your way to an array of breakfast, lunch, snack, or dessert options. For the simplest filling, top a warm crepe with a squeeze of fresh lemon juice and a sprinkle of sugar.
In a blender, combine flour, sugar, salt, milk, eggs, and butter.
Puree until mixture is smooth and bubbles form on top, about 30 seconds. Let batter sit at least 15 minutes at room temperature (or refrigerate in an airtight container, up to 1 day; whisk before using).
Heat a 12-inch nonstick skillet over medium. Lightly coat with butter. Add 1/3 cup batter and swirl to completely cover bottom of skillet. Cook until underside of crepe is golden brown, 2 to 3 minutes.