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Benjamin

Unbelievably Delicious Square Langue de Chat Sandwich Cookies Recipe Unveiled!

Square Langue de Chat Sandwich Cookies are a modern take on the classic French “Langue de Chat” cookies. They have a crisp, buttery texture and are sandwiched with a delicious filling, making them perfect for pairing with tea or coffee.
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Total Time 9 minutes
Course: Appetizer
Cuisine: American
Ingredients Equipment Method Notes

Ingredients
  

  • 1 cup Butter Room temperature
  • 1 cup Sugar Granulated
  • 3 large Egg whites Room temperature
  • 1 tsp Vanilla extract Pure
  • 1 1/4 cups All-purpose flour Can substitute with pastry flour
  • 1/2 cup Chocolate ganache or buttercream For filling
  • 1 cup Chocolate If making ganache
  • 1/2 cup Cream If making ganache

Equipment

  • Mixing bowl
  • electric mixer,
  • Piping bag with a round tip
  • Baking sheets
  • Parchment paper
  • Wire rack

Method
 

  1. Preheat oven to 350°F (175°C) and line baking sheets with parchment paper.
  2. In a large mixing bowl, cream butter and sugar until light and fluffy (about 2-3 minutes).
  3. Gradually add egg whites, mixing well after each addition. The mixture may appear curdled but will smooth out.
  4. Stir in vanilla extract.
  5. Gently fold in the flour, being careful not to overmix.
  6. Transfer batter into a piping bag with a round tip. Pipe small squares or circles onto the baking sheet, leaving space for spreading.
  7. Bake for 8-10 minutes or until edges are lightly golden. Let cool on the sheet for a few minutes before transferring to a wire rack.
  8. While cookies cool, prepare the filling. If using ganache, melt chocolate with cream, stir until smooth, and let it thicken slightly.
  9. Spread a teaspoon of filling on one cookie, then gently press another cookie on top to make a sandwich.
  10. Enjoy or store in an airtight container!

Notes

Use high-quality butter for a richer flavor.
European-style butter enhances texture due to higher fat content.
Watch baking time closely as cookies brown quickly.
Experiment with different fillings like fruit curds or flavored buttercream.
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