Preheat the oven:
Start by preheating your oven to 350°F (175°C). Line a baking sheet with parchment paper to ensure the tuiles don’t stick while baking.
Cream the butter and sugar:
In a bowl, beat the softened butter and granulated sugar together until the mixture is smooth and fluffy. You can use a hand mixer or whisk for this step.
Add the egg white:
Once the butter and sugar are well mixed, add the egg white and beat it in until fully combined. The mixture will be a bit thin, which is perfect.
Mix in the dry ingredients:
Sift the all-purpose flour into the bowl and stir it into the butter mixture until everything is well combined. The batter should be smooth and slightly thick.
Fold in the almonds:
Gently fold in the finely chopped blanched almonds. This will give the tuiles that delightful almond crunch.
Shape and bake the tuiles:
Drop small spoonfuls of the batter onto the prepared baking sheet. Spread each spoonful out into a thin circle, about 3 inches in diameter. Make sure to leave space between each one, as they will spread while baking. Bake them for 8-10 minutes, or until the edges are golden brown.
Cool and finish:
Let the tuiles cool slightly on the baking sheet before transferring them to a wire rack to cool completely. Once cooled, dust them lightly with confectioners’ sugar for a sweet finish.