Preheat your oven to 350°F (175°C). Spread the pecans in a single layer on a baking sheet and toast them in the oven for about 8-10 minutes, or until they are golden brown and fragrant. Keep a close eye on them to prevent burning.

In a medium saucepan over medium heat, melt ½ cup of unsalted butter while stirring frequently. Continue cooking until the butter foams and turns a deep golden brown, which should take about 5-7 minutes.

In a food processor, crush 1 ½ cups of graham crackers to fine crumbs. Combine with the browned butter and a pinch of salt until well mixed, then press this mixture firmly into the bottom of a springform pan. Chill in the refrigerator while preparing the cheesecake filling.

In a large mixing bowl, beat together 2 packages of softened cream cheese, 1 cup of brown sugar, and ½ cup of granulated sugar until smooth and creamy. Add 1 cup of sour cream, 3 large eggs, 2 teaspoons of vanilla extract, and 1 teaspoon of cinnamon. Mix until just combined.

Wrap the springform pan tightly with aluminum foil, ensuring no water seeps into the crust. Place in a larger roasting pan and fill it halfway with hot water.

Preheat your oven to 325°F (160°C), then carefully place the water bath with the cheesecake into the oven. Bake for 55-65 minutes, or until the center is set but still has a slight jiggle when shaken.

Once baked, turn off the oven and crack the door open. Allow the cheesecake to cool slowly for about 1 hour, then refrigerate for at least 4 hours or overnight.

In a medium bowl, beat 1 cup of heavy cream with 1 tablespoon of cinnamon and a touch of granulated sugar until soft peaks form.

When ready to serve, remove the cheesecake from the springform pan, top with whipped cream and sprinkle with toasted pecans and a dash of cinnamon.