Chocolate Swirl Cheesecake

Ingredients

• 3/4 cup cinnamon graham cracker crumbs (about 4 whole crackers)
• 3/4 cup finely chopped walnuts, divided
• 1 tablespoon sugar
• 3 tablespoons butter, melted
• FILLING:
• 1/2 cup heavy whipping cream
• 1 cup semisweet chocolate chips
• 4 packages (8 ounces each) cream cheese, softened
• 3/4 cup packed brown sugar
• 1/2 cup sour cream
• 3 tablespoons all-purpose flour
• 1 teaspoon vanilla extract
• 1/4 teaspoon salt
• 1/4 cup maple syrup, divided
• 3 large eggs, room temperature, lightly beaten
• TOPPING:
• 2 cups sweetened whipped cream