Preheat your oven to 350 degrees F and line a 9x13 baking pan with parchment paper.
Place your cookie dough into your prepared baking pan and press it down to form a crust.
Bake for 20-22 minutes, or until the top is golden to your liking, then remove from the oven and let cool completely.
In a microwave safe bowl, combine caramel bits with heavy whipping cream and microwave in 30 second intervals, stirring between, until melted and smooth.
Drizzle the melted caramel over your cooled sugar cookie crust, and spread into an even layer.
In a microwave safe bowl, combine chocolate chips with vegetable oil. Microwave in 30 second intervals, stirring in-between, until melted and smooth.
Drizzle the melted chocolate over the caramel layer, and spread into an even layer.
Top with chopped Twix candy bars, then transfer to the fridge to set for about 1 hour.
Once set, cut into squares and serve chilled or at room temperature!