01 - Preheat oven to 350°F. Lightly grease a 24-cup mini muffin tin with cooking spray or butter.
02 - In a medium bowl, whisk together flour, baking soda, and salt until well combined.
03 - In a large bowl, beat softened butter and granulated sugar with an electric mixer until light and fluffy, approximately 2 minutes.
04 - Add egg and vanilla extract to the butter mixture. Beat until fully incorporated.
05 - Gradually add dry ingredients to wet ingredients, mixing on low speed until just combined. Do not overmix.
06 - Scoop approximately 1 tablespoon of dough into each muffin cup. Press gently into the bottom and up the sides to form a cup shape.
07 - Bake for 10 to 12 minutes until edges are lightly golden.
08 - Remove from oven. While still warm, gently press the center of each cookie with the back of a spoon to deepen the cup shape. Cool in pan for 10 minutes before transferring to a wire rack.
09 - In a chilled bowl, whip heavy cream, powdered sugar, and vanilla extract until stiff peaks form.
10 - Fill each completely cooled cookie cup with whipped cream. Top with fresh berries, sprinkles, or mini chocolate chips as desired.