01 - Preheat your oven to 350°F. Lightly grease a 24-cup mini muffin tin with cooking spray or butter.
02 - In a medium bowl, whisk together the flour, baking soda, and salt until well combined.
03 - In a large bowl, beat the softened butter and granulated sugar using an electric mixer until light and fluffy, approximately 2 minutes.
04 - Add the egg and vanilla extract to the butter mixture. Beat until fully incorporated and smooth.
05 - Gradually add the dry ingredients to the 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 with your fingers to form a cup shape, pushing the dough up the sides of the tin.
07 - Bake for 10 to 12 minutes, or until the edges are lightly golden brown.
08 - Remove from oven and immediately press the center of each cookie with the back of a spoon while still warm to deepen the cup shape. Cool in the tin for 10 minutes, then transfer to a wire rack.
09 - In a chilled bowl, whip the heavy cream, powdered sugar, and vanilla extract using an electric mixer until stiff peaks form.
10 - Fill each cooled cookie cup with the whipped cream using a piping bag or spoon. Top with fresh berries, sprinkles, or mini chocolate chips as desired. Serve immediately or refrigerate until ready to serve.