• Preheat the oven to 350 degrees Fahrenheit. Prepare a baking sheet with parchment paper and set aside.
• Combine the softened butter and brown sugar in a mixing bowl. Beat together until creamy.
• Add the eggs and vanilla, mixing until combined.
• Slowly fold in the flour, crushed graham crackers, salt, baking soda, and baking powder using a rubber spatula until incorporated and no dry-ingredient streaks are left.
• Use a large cookie scoop to make 2-inch round portions of cookie dough and place them on the prepared baking sheet about 2 inches apart.
• Use the bottom of a clean glass to press the center of each cookie and slightly flatten, leaving a slightly crinkled edge on each cookie. This is for filling with the key lime frosting later.
• Bake for 13-15 minutes or until the edges of the cookies are set.
• Remove the cookies and let them cool completely.
• While the cookies cool, make the key lime frosting.

Frosting

• Beat the cream cheese in a large bowl with a hand mixer until smooth.
• Then add the sweetened condensed milk along with the confectioner’s sugar and salt - beating until creamy.
• Add the lime juice, heavy cream, and vanilla extract. Beat for 2 minutes or until the frosting is silky smooth.
• Fold in the lime zest until evenly distributed.

Decorate

• Once the cookies have cooled, take a large tablespoon of the frosting and spread it in the center of each cookie.
• Top with a small dollop of whipped cream and finish with extra lime zest for garnish.