Creating your Peaches and Cream Crumble Bars can be a joyful experience. Just follow these detailed steps to bring this delicious dessert to life:

1. Preheat your oven to 350°F (175°C). Grease a 9×13 baking dish with non-stick spray.
2. In a mixing bowl, combine sliced peaches, granulated sugar, lemon juice, cinnamon, and flour. Toss until the peaches are evenly coated. Set aside.
3. In another bowl, mix together the oats, brown sugar, salt, and all-purpose flour. Stir in the cold butter pieces until the mixture resembles coarse crumbs.
4. Press half of the crumble mixture evenly into the prepared baking dish to form the crust.
5. In a separate bowl, beat the softened cream cheese, powdered sugar, vanilla extract, and egg until smooth and creamy.
6. Spread the cream cheese mixture over the pressed crust layer in the baking dish.
7. Layer the peach mixture on top of the cream cheese layer, distributing it evenly.
8. Sprinkle the remaining crumble mixture over the peaches.
9. Bake for 40-45 minutes, or until the topping is golden brown and bubbly.
10. Allow the crumble bars to cool completely in the pan on a wire rack before slicing.

By following these steps, you will create a batch of amazing Peaches and Cream Crumble Bars that are sure to impress!