To prepare the crust add cookies to a food processor and process until crushed.
Add melted butter and pulse until well combined.
Mixture should resemble wet sand.
Alternatively you can add the cookies to a large zip lock bag and crush using a rolling pin.
Add the crushed cookie mixture to a tart shell 30 centimeters and use the back of a spoon to press down on the bottom and sides making sure it's spread out evenly.
Chill for 1 hour.
Microwave Dulce de Leche for about 30 second and mix until smooth.
Add to tart shell and refrigerate.
To prepare ganache, start by adding dark chocolate to a large microwave safe bowl along with cream and microwave for 20 seconds at a time, mixing each time until smooth.
Add to prepared shell followed by all the chopped Twix bars.
Chill for 1 hour before serving.