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 blended.
03 - In a large bowl, beat softened butter and granulated sugar with electric mixer until light and fluffy, approximately 2 minutes.
04 - Add egg and vanilla extract to butter mixture. Beat until fully incorporated and smooth.
05 - Gradually add dry ingredients to wet ingredients, mixing on low speed until just combined. Do not overmix.
06 - Scoop approximately 1 tablespoon dough into each muffin cup. Press gently into bottom and up sides to form cup shape.
07 - Bake for 10-12 minutes until edges are lightly golden. Centers should be set.
08 - Remove from oven. While warm, gently press center of each cookie with back of spoon to deepen cup shape. Cool in pan 10 minutes, then transfer to wire rack to cool completely.
09 - In chilled bowl, whip heavy cream, powdered sugar, and vanilla with electric mixer until stiff peaks form.
10 - Pipe or spoon whipped cream into cooled cookie cups. Top with fresh berries, sprinkles, or mini chocolate chips as desired. Serve immediately or refrigerate until serving.