KOSHER FRENCH MACAROONS RECIPES

Steps:

• Line a baking sheet with a silicone baking mat.
• Beat egg whites in the bowl of a stand mixer fitted with a whisk attachment until whites are foamy; beat in white sugar and continue beating until egg whites are glossy, fluffy, and hold soft peaks. Sift confectioners' sugar and ground almonds in a separate bowl and quickly fold the almond mixture into the egg whites, about 30 strokes.
• Spoon a small amount of batter into a plastic bag with a small corner cut off and pipe a test disk of batter, about 1 1/2 inches in diameter, onto prepared baking sheet. If the disk of batter holds a peak instead of flattening immediately, gently fold the batter a few more times and retest.
• When batter is mixed enough to flatten immediately into an even disk, spoon into a pastry bag fitted with a plain round tip. Pipe the batter onto the baking sheet in rounds, leaving space between the disks. Let the piped cookies stand out at room temperature until they form a hard skin on top, about 1 hour.
• Preheat oven to 285 degrees F (140 degrees C).
• Bake cookies until set but not browned, about 10 minutes; let cookies cool completely before filling.

Steps:

• Preheat oven to 300°. Lightly grease two baking sheets with cooking spray and line with parchment. Make macarons: Set a fine-mesh sieve over a large bowl and sift 1 ¾ cup powdered sugar with almond flour. Use a rubber spatula to help push larger pieces through. Keep pressing until less than 2 tablespoons of solids remain. Discard solids. In a mixer, beat egg whites, cream of tartar, and a pinch of salt until frothy. Increase speed to medium-high and slowly add superfine sugar. Continue to beat on medium-high until egg whites are stiff and glossy, about 2 to 3 minutes. Beat in food coloring until combined, about 30 seconds more. Fold dry ingredients into beaten egg whites with a spatula until it flows like thick lava, about 2 minutes.  Fit a pastry bag with a a 1/4-inch round tip and transfer batter into bag. Dab some remaining batter in bowl onto the corners of two baking sheets and line sheets with parchment. Pipe batter into 1-inch circles, spacing each circle about 1 inch apart. Tap baking sheet against counter a few times to release any air bubbles. Let piped batter to sit out for 45 minutes before baking. Bake one sheet at a time, rotating halfway through, until risen and just set, 13 to 14.  Let cool 10 to 15 minutes before gently peeling parchment away to transfer to a rack to cool completely.  Using a mixer, beat butter with remaining ¾ cup powdered sugar and vanilla until fluffy and smooth. Pipe or spread filling on flat sides of half of cookies; top with remaining half.  Wrap in plastic and refrigerate until ready to serve.