• Preheat oven to 400° and line a baking sheet(s) with parchment paper. Set aside.

For The Cookies

• In a medium bowl, whisk flour, sugar and salt together.
• Add egg whites and vanilla, stir until nice and smooth.
• Next, add butter and whisk until combined.
• Using a 1 ½ tsp cookie scoop, drop onto prepared baking sheet 4 inches apart.
• Carefully place in the oven and bake for approximately 5-7 minutes or until edges start to brown.
• Remove from oven, loosen from baking sheet and using a wooden spoon, wrap the cookie around the end of the spoon. Press to seal and hold for 15-20 seconds.
• Once set, remove from end of wooden spoon and place of wire rack to cool. Continue with remaining cookies. Let cool completely before filling. *Return to oven for 1 minute if cookies become too cool and unable to shape.

For The Banana Filling

• Beat heavy cream on high speed until high peaks form.
• Add powdered sugar and beat until soft peaks form and mixture is light and fluffy.
• Fold mixture into mashed bananas.
• Stir lemon juice and rum into mousse mixture. Cover with plastic wrap and chill.
• Fill cookies once cookies have cooled completely then enjoy!