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 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 dough into each muffin cup. Press gently with fingers to form cup shape, pushing dough up the sides.
07 - Bake for 10 to 12 minutes until edges are lightly golden.
08 - Remove from oven. While warm, gently press center of each cookie with back of spoon to deepen cup shape. Cool in tin for 10 minutes, then transfer to wire rack.
09 - In chilled bowl, whip heavy cream, powdered sugar, and vanilla extract 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.