The tuile batter can be made 1 day in advance. Refrigerate it in an airtight container until you’re ready to bake.
Recipe information
Yield
Makes 6
Ingredients
Preparation
Step 1
Preheat the oven to 350°F, with a rack in the middle. Put the butter and brown sugar in the bowl of an electric mixer fitted with the paddle attachment. Mix on medium speed until fluffy, 2 to 3 minutes. Mix in the egg whites, one at a time. Mix in the flour, salt, and vanilla.
Step 2
Line a baking sheet with a Silpat baking mat or parchment paper. Spoon 2 tablespoons batter onto the baking mat. Using an offset spatula, spread the batter into a 7-inch circle, with the edges slightly thicker than the center. Repeat, making a second circle on the mat.
Step 3
Bake, rotating the sheet halfway through, until the edges of the cookies turn golden, about 9 minutes. Using a small spatula, immediately transfer 1 cookie to a small bowl (about 5 1/2 inches in diameter and 3 inches deep). Gently mold the warm cookie to the shape of the bowl, pressing the bottom down to flatten. Let stand in the bowl 30 seconds; remove. Repeat with the remaining cookie. If the cookies become too cool to shape, return them to oven for 20 seconds. Repeat, baking the remaining batter and forming it into bowls. If using just 1 baking sheet, let it cool before spreading the next batch of batter onto it.
