½ vanilla bean, split lengthwise, seeds scraped and reserved
3 large egg whites, room temperature
1 cup (125 grams) all-purpose flour
½ teaspoon (1.5 grams) kosher salt
Mint Chocolate Ganache (recipe follows)
Garnish: turbinado sugar
Instructions
Preheat oven to 400°F. Line a baking sheet with parchment paper or a Silpat nonstick baking mat.
In the bowl of a stand mixer fitted with the paddle attachment, beat butter, granulated sugar, and vanilla bean seeds at medium speed until fluffy, 3 to 4 minutes, stopping to scrape sides of bowl. Reduce mixer speed to medium-low. Add egg whites, one at a time, beating well after each addition.
In a medium bowl, sift together flour and salt three times. Reduce mixer speed to low. Gradually add flour mixture to butter mixture, beating just until combined.
Spoon batter into a large piping bag fitted with a medium round tip. Pipe batter onto prepared pans in straight lines about 3 inches long and ½ inch wide.
Bake until edges are golden brown, 10 to 12 minutes. Let cool completely. Once cool, dip into Mint Chocolate Ganache, and sprinkle with turbinado sugar.
Recipe by Bake from Scratch at https://staging.bakefromscratch.com/langues-de-chat/