Madeleines

3 eggs
1/4 teaspoon salt
1 cup sugar
1 teaspoon vanilla extract
1 cup all-purpose flour
1/4 pound unsalted butter, melted and cooled
optional: freshly grated lemon zest or almond paste.
optional: dust with powdered sugar after baking.
Preheat oven to 375 F. Butter and flour the madeleine pans. If using
a non-stick pan, only use cooking spray. Beat the eggs, salt, and sugar
together until thick, 8 minutes. Add the vanilla. Fold in the flour,
rapidly, but gently. Fold in the butter gently. Quickly spoon the
mixture into the madeleine pans, about 3/4 full. Bake until golden,
about 8-10 minutes. Watch carefully. Remove from pans, cool on
racks.