Combine the dark chocolate, semi sweet chocolate and coconut oil in a small pan and heat over low heat, stirring frequently until melted and smooth.
Line a mini muffin tray with liners.
Spoon roughly 1 teaspoon of melted chocolate into the bottom of each liner, tilting the pan to completely coat the bottoms.
Freeze for 5 minutes.
Spoon 1 teaspoon of Cookie Notti on top of the hardened chocolate. You can heat the Cookie Notti in the microwave for 5-10 seconds and stir to soften slightly first.
Spoon additional melted chocolate over the Cookie Notti and tilt the pan to cover completely.
Refrigerate for 1-2 hours until completely hardened