Preheat oven to 350 degrees F. Remove cookie dough from refrigerator to slightly soften.
Press dough into bottom and up the sides of an ungreased, 9-inch tart pan with removable sides. Prick with fork in about 8 places.
Bake for about 18 to 20 minutes, or until crust is light golden brown. Remove from oven to a cooling rack. Allow to cool for about 40 minutes, then remove sides of pan. May also remove bottom disc from tart. Continue to cool on wire rack.
Meanwhile, in a medium size mixing bowl, using an electric mixer, beat together the mascarpone cheese, confectioner sugar, and vanilla. Spread into the cooled crust.
In another mixing bowl, place the pudding mix and milk. Whisk to combine, or use low speed of electric mixer. Stir in the pumpkin and cinnamon. Combine well. Spread over the mascarpone cheese layer.
Evenly top with chopped pecans and toffee bits.
Place butterscotch chips in a small microwave safe bowl. Melt chips at 20-30 second intervals, stirring after each time. When chips are melted, drizzle over the top of tart.
Refrigerate until ready to serve.