Ingredients
3/4 cup all-purpose flour
1/2 teaspoon salt
Pinch of freshly grated nutmeg
1 1/4 cups whole milk
1 whole large egg
1 large egg yolk
1 tablespoon unsalted butter, melted
Preparation
Make crêpes: Sift together flour, salt, nutmeg, and pepper to taste into a bowl. Whisk together milk, whole egg, and yolk in a small bowl, then gradually whisk into flour mixture. Force batter through a fine sieve into a bowl.
Heat a dry 7- to 8-inch nonstick skillet over moderately high heat until hot, then brush very lightly with some melted butter. Spoon about 2 tablespoons batter into skillet, tilting to coat bottom. (If batter sets before skillet is coated, reduce heat slightly for next crêpe.) Cook until underside is lightly browned, 6 to 10 seconds, then loosen crêpe with a spatula and flip. Cook until just cooked through, about 20 seconds, and transfer to a plate. Make 15 more crêpes in same manner, brushing skillet with melted butter as needed and stacking crêpes on plate.
Assemble and bake crêpes: Preheat oven to 350°F.
Spread 1/4 cup filling across center of 1 crêpe and roll into a cylinder. Transfer, seam side down, to buttered baking dish, then assemble more crêpes in same manner, fitting them snugly. Bake in middle of oven 15 minutes.
Make topping while crêpes bake: Stir together yolk, 2 tablespoons cream, and reserved 1/2 cup sauce until smooth. Beat remaining 3 tablespoons cream with a whisk until it holds soft peaks, then fold into yolk mixture.
Spoon topping over crêpes and broil 5 to 6 inches from heat until lightly browned, about 2 minutes.
Heat butter in skillet, then add reserved asparagus tips and toss until warm.
Put 2 crêpes on each of 8 plates and top with asparagus tips.
Cooks’ note: Filling and crêpes can be made 2 days ahead and kept, separately, covered and chilled.
