Creating Salted Caramel Apple Crumble Bars is easier than you might think. Follow these simple steps to achieve perfect bars every time:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish with cooking spray or line it with parchment paper for easy removal.
2. Prepare the Crumble Mixture: In a large bowl, combine the flour, oats, brown sugar, granulated sugar, melted butter, cinnamon, and salt. Mix until the mixture resembles coarse crumbs.
3. Set Aside Half: Remove about 1 ½ cups of the crumble mixture and set it aside for topping later.
4. Form the Base: Press the remaining crumble mixture firmly into the bottom of the prepared baking dish to form a uniform crust.
5. Prepare the Apples: In a separate bowl, toss the sliced apples with lemon juice and vanilla extract until coated.
6. Add Apples: Spread the apple mixture evenly over the crust in the baking dish.
7. Drizzle Caramel: Pour the salted caramel sauce evenly over the apples, ensuring even coverage.
8. Top with Crumble: Sprinkle the reserved crumble mixture over the salted caramel and apples.
9. Bake the Bars: Place the baking dish in the preheated oven and bake for 30-35 minutes or until the topping is golden brown and the apples are tender.
10. Cool Down: Once baked, remove the bars from the oven and allow them to cool in the dish for about 15-20 minutes.
11. Slice and Serve: Use a sharp knife to cut the cooled bars into squares or rectangles, as preferred.

By following these steps, you will create delicious Salted Caramel Apple Crumble Bars that everyone will love!