Preheat the oven to 350° and set a rack in the center. Line 2 large cookie sheets with parchment paper. On one sheet, mound 2 rounded teaspoons of batter 4 inches apart; you should get about 6 mounds per sheet. With an offset spatula, spread the batter into very thin 5-inch rounds. Bake the rounds in the center of the oven for 8 to 10 minutes, until golden. Using a large spatula, transfer the tuiles to a work surface to cool completely. Make the next batch on the second cookie sheet while the first sheet cools. Repeat with the remaining batter until all of the tuiles are made.