Creating Peaches and Cream Cheesecake Bars is a straightforward process if you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease a 9×9-inch baking dish or line it with parchment paper for easy removal.

2. Prepare the Crust: In a medium bowl, combine the graham cracker crumbs, melted butter, and ¼ cup sugar. Mix until well combined. Press this mixture into the bottom of the prepared baking dish to form an even layer.

3. Bake the Crust: Bake the crust in the preheated oven for 10-12 minutes or until lightly browned. Remove from the oven and set aside to cool.

4. Make the Cheesecake Filling: In a large mixing bowl, beat the softened cream cheese until smooth. Gradually add the 1 cup of sugar and continue beating until well incorporated.

5. Add Eggs and Vanilla: Beat in the eggs one at a time, mixing just until combined. Add the vanilla extract and mix again until smooth.

6. Pour the Filling: Carefully pour the cheesecake filling over the pre-baked crust, spreading it into an even layer.

7. Prepare the Peach Topping: In a separate bowl, toss the sliced peaches with brown sugar, lemon juice, and cinnamon (if using). Arrange the peach slices on top of the cheesecake filling.

8. Bake the Bars: Bake in the oven for an additional 25-30 minutes or until the edges are set and the center is slightly jiggly.

9. Cool the Bars: Remove from the oven and allow to cool at room temperature for about 30 minutes. Then transfer to the refrigerator to chill for at least 2 hours.

10. Slice and Serve: Once chilled and set, slice into squares. The bars can be enjoyed immediately or stored in the refrigerator for up to five days.