Making Peaches and Cream Crumble Bars is straightforward. Here are the steps to follow:

1. Preheat Oven: Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking dish.
2. Prepare the Peaches: In a bowl, combine sliced peaches, 1/4 cup of sugar, lemon juice, and vanilla extract. Set aside to let the flavors meld.
3. Make the Crust: In another bowl, mix 2 cups of flour, oats, baking powder, salt, and 3/4 cup of sugar. Stir in melted butter until the mixture resembles coarse crumbs.
4. Spread Crust: Press half of the crumb mixture into the bottom of the prepared baking dish to form the crust.
5. Prepare Cream Layer: In a separate bowl, beat together the softened cream cheese, remaining sugar, almond extract, and beaten egg until smooth. Spread this mixture over the crust evenly.
6. Add Peaches: Spoon the peach mixture over the cream layer, distributing it evenly.
7. Top with Crumble: Sprinkle the remaining crumb mixture over the top of the peaches.
8. Bake: Place the dish in the oven and bake for 30-35 minutes, or until the top is golden brown and the peaches are bubbly.
9. Cool: Remove from the oven and allow to cool for at least 15-20 minutes before slicing into bars.
10. Serve and Enjoy: Cut into squares and enjoy your delicious Peaches and Cream Crumble Bars!