For the Crust

• 2 cups graham cracker crumbs (or digestive biscuit crumbs)
• 1/3 cup brown sugar, packed
• 1/2 cup unsalted butter, melted
• 1/4 teaspoon salt

For the Cheesecake Filling

• 3 (8 oz / 225 g) packages cream cheese, softened to room temperature
• 1 cup granulated sugar
• 3 large eggs, room temperature
• 1 cup mashed ripe bananas (about 2 medium bananas)
• 1/2 cup sour cream (or plain Greek yogurt)
• 2 teaspoons vanilla extract
• 1 tablespoon cornstarch (or all-purpose flour)
• 1/2 teaspoon ground cinnamon (optional, for warmth)
• Pinch of salt

For the Caramel Nut Topping

• 3/4 to 1 cup thick caramel sauce (store-bought or homemade)
• 3/4 cup chopped toasted nuts (pecans, walnuts, or a mix)

Optional Garnishes

• Sliced fresh banana
• Whipped cream
• Extra caramel drizzle
• Additional chopped nuts