Ingredients: 10 Day-old Flaky Croissants 8 tablespoons (1 stick) unsalted butter, softened 1/2 cup granulated sugar 1 cup blanched almond flour 1 tablespoon all-purpose flour 1/4 teaspoon salt 1 large egg 1/4 teaspoon almond extract Sliced almonds, for garnish (optional) Powdere…