Preheat the oven to 325°F (165°C). Grease a 9-inch springform pan and line the bottom with parchment paper.
Mix graham cracker crumbs, melted butter, brown sugar, and cinnamon. Press into the pan and bake for 10 minutes. Let it cool.
Beat softened cream cheese and granulated sugar until smooth. Add eggs one at a time, mixing after each. Stir in vanilla extract and sour cream until fluffy and smooth.
Pour the batter over the cooled crust. Bake for 55-60 minutes, until set with a slight jiggle. Turn off the oven, crack the door, and cool for 1 hour. Refrigerate for at least 4 hours or overnight.
In a saucepan, heat heavy cream, brown sugar, butter, and vanilla over medium heat until it thickens (5-7 minutes). Remove from heat and cool slightly.
Once the cheesecake is chilled, pour the caramel topping over it and sprinkle with toffee bits. Slice and serve!