Step 1: Prepare the Crust

1. Preheat oven to 325°F (163°C).
2. In a bowl, mix graham cracker crumbs, sugar, melted butter, and cinnamon until well combined.
3. Press the mixture firmly into the bottom of a greased 9-inch springform pan.
4. Bake for 8-10 minutes, then let cool.

Step 2: Make the Cheesecake Filling

1. In a large bowl, beat softened cream cheese and sugar until smooth.
2. Add eggs one at a time, mixing until just combined.
3. Stir in vanilla extract, sour cream, and honey until smooth.
4. Pour the filling over the cooled crust.

Step 3: Create the Cinnamon Swirl

1. In a small bowl, mix melted butter, brown sugar, cinnamon, and flour.
2. Drizzle the cinnamon mixture over the cheesecake batter and use a knife to create swirls.

Step 4: Bake the Cheesecake

1. Place the springform pan in a larger baking dish and fill with about 1 inch of hot water to create a water bath.
2. Bake for 50-55 minutes or until the center is set but slightly jiggly.
3. Turn off the oven and let the cheesecake cool inside for 15 minutes before transferring to a wire rack.
4. Refrigerate for at least 4 hours or overnight.

Step 5: Add the Topping

1. Whisk powdered sugar, milk, and vanilla extract until smooth.
2. Drizzle over the chilled cheesecake before serving.