Prepare the Oven and Pan:

• Preheat oven to 350°F (175°C).

• Line a 9×9-inch baking dish with parchment paper, leaving an overhang for easy removal.

Make the Crust and Crumble:

• In a medium bowl, combine flour, oats, brown sugar, cinnamon, and salt.

• Stir in the melted butter until the mixture is crumbly.

• Press 2/3 of the mixture into the bottom of the prepared pan to form the crust. Reserve the remaining for the topping.

• Bake the crust for 10 minutes, then remove and set aside.

Prepare the Cheesecake Layer:

• In a large bowl, beat the cream cheese until smooth.

• Add sugar, eggs, and vanilla extract, and beat until creamy and well combined.

• Pour the cheesecake mixture over the pre-baked crust and spread evenly.

Make the Strawberry Layer:

• In a small bowl, toss the diced strawberries with sugar, cornstarch, and lemon juice.

• Spoon the strawberry mixture evenly over the cheesecake layer.

Add the Crumble Topping:

• Sprinkle the reserved crumble mixture over the top of the strawberries.

Bake:

• Bake for 35–40 minutes, or until the center is set and the top is golden brown.

• Let cool to room temperature, then refrigerate for at least 3 hours before slicing.

Serve:

• Cut into bars and serve chilled. Optional: Dust with powdered sugar or drizzle with white chocolate for a pretty finish.