Preheat the oven to 325°F (163°C).
In a medium bowl, combine graham cracker crumbs and melted butter. Press into the bottom of a 9-inch springform pan to form the crust.
In a large mixing bowl, beat cream cheese and sugar until smooth. Add eggs one at a time, beating well after each addition. Mix in vanilla extract and sour cream.
Stir in flour until just combined. Gently fold in melted butterscotch chips.
Pour batter over the crust and smooth the top. Bake for 55-60 minutes, or until the center is almost set.
Turn off the oven and let the cheesecake cool inside with the door slightly open for 1 hour. Remove and refrigerate for at least 4 hours or overnight.
Before serving, spread whipped cream on top, drizzle with caramel sauce, sprinkle toffee bits, and add extra butterscotch chips.