Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

In a medium bowl, whisk together the flour, baking powder, baking soda, and salt; set aside.

In a large bowl, beat the softened butter, granulated sugar, and brown sugar together until creamy.

Add the egg and vanilla extract to the butter mixture and beat until well combined.

Gradually mix the dry ingredient mixture into the wet ingredients until just combined.

Scoop tablespoon-sized portions of dough onto the prepared baking sheet, spacing them about 2 inches apart.

Bake in the preheated oven for 8-10 minutes or until the edges are lightly golden.

Remove from the oven and allow the cookies to cool completely on a wire rack.

In a separate bowl, combine the softened cream cheese, powdered sugar, and vanilla extract, mixing until smooth.

Once the cookies are cool, spread a layer of the cream cheese mixture on top of each cookie.

Toss the mixed fresh fruits with lemon juice to prevent browning, then arrange them on top of the frosted cookies.

Serve immediately or refrigerate until ready to serve.