Ingredients
Equipment
Method
Make the crumb base
- Preheat the oven to 350°F and lightly prepare a 9x9-inch pan for easy release or lining.
- Mix the flour, sugar, cold cubed butter, and egg until crumbly, with no large dry pockets.
- Press half of the crumb mixture into the bottom of the 9x9-inch pan, pressing firmly into an even layer.
Fill and top
- Toss the diced apples with cinnamon and caramel until glossy and evenly coated.
- Spread the spiced caramel apples over the pressed base in an even layer.
- Mix the oats into the remaining crumbs, then sprinkle the oat-crumb streusel evenly over the apples and lightly press so it adheres.
Bake
- Bake for 40 minutes at 350°F until the streusel is golden and the center looks set around the edges.
- Cool bars in the pan until warm to the touch so the caramel thickens and the layers hold together.
Notes
Pro tip: keep the butter cold (and handle the dough briefly) so the topping bakes into a true crumbly streusel. Store covered in the refrigerator up to 4 days; rewarm briefly if you like. Freezing is yes—freeze cut bars in an airtight container up to 2 months and thaw overnight in the fridge. For a lighter option, use reduced-sugar caramel sauce to lower added sugar without changing the bake time.
