Preheat the oven: to 325°F. Wrap the outside of a 9-inch springform pan with foil and lightly grease the inside.
Make the crust: Mix graham cracker crumbs, brown sugar, and melted butter in a bowl until combined. Press into the bottom of the pan and slightly up the sides. Bake for 10 minutes, then set aside to cool.
Make the filling: In a large bowl, beat the cream cheese until smooth. Add sugar and mix until creamy. Beat in the eggs one at a time. Stir in sour cream and vanilla extract until fully combined.
Bake the cheesecake: Pour the filling into the crust and smooth the top. Place the pan in a larger baking dish and fill with about 1 inch of hot water (water bath). Bake for 55–60 minutes, or until the center is set but slightly jiggly. Turn off the oven, crack the door open, and let the cheesecake cool in the oven for 1 hour.
Chill: Remove the cheesecake, let cool at room temp, then refrigerate for at least 4–6 hours or overnight.
Make the pecan topping: In a saucepan over medium heat, combine brown sugar, maple syrup, heavy cream, and butter. Stir until the sugar dissolves and the mixture begins to bubble. Remove from heat and stir in vanilla, salt, and chopped pecans. Let cool slightly.
Top the cheesecake: Spoon the pecan topping over the chilled cheesecake. Let set in the fridge for 30 minutes before slicing.