Step 1: Prepare the Shortbread Cookies. If making your own, mix together a basic keto shortbread recipe, bake, cool, and crumble them into fine crumbs.
Step 2: Mix the Ingredients. In a mixing bowl, combine the crumbled shortbread cookies and the granulated sweetener. Pour in the melted butter and mix until sandy.
Step 3: Form the Crust. Transfer the mixture into your pie or tart pan and press down firmly and evenly across the bottom and sides.
Step 4: Pre-bake the Crust. Preheat your oven to 350°F (175°C) and bake for about 10 minutes until lightly golden.
Step 5: Cool and Fill. Allow the crust to cool completely before adding your desired filling.