• Preheat oven to 350 degrees. Place rack in the center of the oven.
• Line a 9x13-inch baking pan with foil. Be sure the foil is long enough at each end to use as a handle for removing the bars after baking. Grease the foil.

Crust

• In a food processor or medium bowl, add flour, brown sugar, and butter. Using the food processor, mix until crumbly. If combining in a bowl, mix with a pastry cutter or fork.
• Using the back of a measuring cup, or the bottom of a loaf pan, press the crust into the prepared pan.
• Bake for 10 minutes or until lightly golden.

Cheesecake

• In a medium bowl or in the bowl of a stand mixer, beat together cream cheese and ½ cup granulated sugar. Mix in eggs and vanilla until smooth. Spread over hot crust.
• In a small bowl, mix together 2 tablespoons sugar, cinnamon, and nutmeg. Gently stir sugar mixture together with sliced apples until coated.
• Evenly layer sugared apples on top of cream cheese layer.

Streusel Topping

• In a small bowl, using a fork or a pastry cutter, mix together brown sugar, flour, oats, and softened butter until crumbly. Stir in egg whites until fully combined. Spoon over apples.
• Bake for 30-40 minutes or until filling is set and streusel is golden. Cool 15 minutes. Remove cheesecake bars from the pan using the foil overhang.
• Cool completely. Drizzle caramel sauce evenly over the top. Chill in the refrigerator until firm.
• Cut into 24 squares for serving.