Easy Apple Pie Bars with a Buttery Shortbread Crust
All the gooey cinnamon-apple goodness of a classic pie, baked into a simple slab that feeds a crowd without any fussy lattice work.
A buttery shortbread crust holds it all together, making these apple pie bars the dessert you’ll reach for all fall.
Why This One Stays in the Rotation
The shortbread base gets crisp and sandy in the oven, then softens just enough under the warm apple layer. It is sturdy enough to slice cleanly, so every square lifts out with a neat edge. The apples keep a little bite, never turning to mush, and the oat crumble on top brings a toasted, buttery crunch that balances the filling’s gentle sweetness.
I like that the whole thing bakes in one pan and feeds twelve people without me rolling out a single pie crust.
Ingredients
For the crust
- 1 cup (2 sticks) cold unsalted butter, cubed: the butter must be cold, straight from the fridge, for a crumbly dough
- 2 cups all-purpose flour: spooned and leveled, not scooped
- 1/2 cup granulated sugar: keeps the crust lightly sweet
- 1/4 tsp fine sea salt: balances the butter
For the apple filling
- 6 medium apples (about 2.5 lbs), peeled, cored, and thinly sliced: a mix of Honeycrisp and Granny Smith gives tartness and structure
- 1/2 cup packed light brown sugar: melts into a caramel-like glaze
- 2 tbsp all-purpose flour: thickens the juices so the filling is never soupy
- 1 tbsp fresh lemon juice: brightens the apples and keeps them from browning
- 1 1/2 tsp ground cinnamon: the main warm spice
- 1/4 tsp ground nutmeg: adds a subtle nutty depth
- 1/4 tsp fine sea salt: sharpens the apple flavor
For the crumble topping
- 1 cup all-purpose flour
- 1/2 cup packed light brown sugar: deepens the topping’s flavor
- 1/2 cup old-fashioned rolled oats: gives a nubby, crisp texture (do not use instant oats)
- 1/2 tsp ground cinnamon
- 1/2 cup cold unsalted butter, cubed: worked in until clumps form
Variations / Substitutions
- Swap the fruit: firm pears work the same way; add a handful of fresh cranberries for a tart pop.
- Make it gluten-free: use a 1-to-1 all-purpose gluten-free flour blend in all three components. The crust will be a touch more crumbly, so press it firmly into the pan.
- Dairy-free: an equal amount of cold vegan butter sticks can replace the butter in the crust and crumble.
- Change the warmth: a pinch of cardamom or allspice brings a slightly floral note if you want to move beyond cinnamon.
If you love this, try my classic Dutch Apple Pie.
How to Make Apple Pie Bars
Step 1: Press and Bake the Crust
Preheat your oven to 350°F (175°C) and line a 9×13-inch metal baking pan with parchment paper, leaving a little overhang on the long sides for easy lifting. Pulse the 2 cups flour, 1/2 cup sugar, and 1/4 tsp salt in a food processor just to combine. Scatter the 1 cup cold cubed butter over the dry mix and pulse until the mixture looks like damp sand and holds together when you pinch it. Dump the crumbs into the prepared pan and press them into an even, firm layer with the bottom of a measuring cup or your fingers.
Bake the crust until it is set and the edges are just beginning to turn pale gold, about 15 to 18 minutes. The center will look dry and matte, not raw. This blind-bake keeps the bottom from going soggy once the juicy apples pile on.
Step 2: Toss the Apples with Cinnamon
While the crust bakes, pile the sliced apples into a large mixing bowl. Add the 1/2 cup brown sugar, 2 tbsp flour, 1 tbsp lemon juice, 1 1/2 tsp cinnamon, 1/4 tsp nutmeg, and 1/4 tsp salt. Toss everything with your hands or a big spoon until the apples are coated and the sugar has started to draw out a thin syrup from the fruit. The slices will glisten and feel a little slippery.
Let the apple mixture sit for 5 minutes so the juices begin to release. This head start helps the filling thicken quickly in the oven instead of steaming the crust.
Step 3: Mix the Oat Crumble
Wipe out the food processor bowl (or use a large bowl and a pastry cutter), then combine the 1 cup flour, 1/2 cup brown sugar, 1/2 cup oats, and 1/2 tsp cinnamon. Add the 1/2 cup cold cubed butter and pulse or cut it in with your fingers until the mixture forms pea-sized clumps and no dry floury patches remain. The crumble should look shaggy and hold together loosely when you squeeze a handful.
Keep the crumble cold. If your kitchen is warm, pop the bowl in the fridge while you finish the next step. Cold butter makes for a crisper, more distinct topping.
Step 4: Layer and Bake the Bars
Slide the pan with the pre-baked crust onto a cooling rack for just a minute to take the initial heat out of the metal, but don’t let it cool fully. Spoon the apple mixture over the warm crust, spreading it into an even layer and pressing down lightly to compact the slices. Scatter the crumble topping over the apples in a loose, thick blanket, covering the fruit all the way to the edges.
Return the pan to the oven and bake for 30 to 35 minutes. The filling will be bubbling thickly around the sides and the crumble will turn deep golden brown. If you peek with a fork, the apples should feel tender with just a little resistance.
Step 5: Cool and Slice
Transfer the pan to a wire rack and let the bars cool completely before you attempt the first cut. The filling continues to set as it cools, so slicing while warm will give you a delicious but messy pile. Once the pan is room temperature, lift the whole slab out by the parchment overhang and set it on a cutting board.
Run a long chef’s knife under hot water, wipe it dry, and slice the slab into 12 squares. The cut edges will be clean, with distinct layers of crumble, apple, and pale crust. Serve the bars at room temperature, or warm them briefly in a low oven if you like them soft and fragrant.
A Few Notes for Perfect Bars
- Use a mix of apples: so the filling has both body and brightness. Honeycrisp hold their shape; Granny Smith brings a sharp edge. An all-sweet blend can turn mealy.
- Press the crust firmly: in the corners and around the edges, where it is most likely to crumble later. The bottom of a flat glass does this quickly.
- Cool fully on the rack: before cutting. Even an hour helps. If you try to slice a warm pan, the squares will slump. I often bake these in the morning and leave them on the counter until after dinner.
- Don’t skip the lemon juice.: It lifts the whole thing and stops the apples from tasting flatly sweet.
Bake times can vary slightly by pan material; use these as a guide after you add the apple filling.
| Pan material | Total bake time after adding filling |
|---|---|
| Glass | 30 to 35 mins |
| Dark metal | 28 to 32 mins |
Storing Leftovers
- Refrigerate: any bars you won’t eat within a day. Layer them between sheets of parchment in an airtight container; they keep well for up to 4 days.
- Reheating: restores the crispness. Spread the bars on a baking sheet and warm in a 300°F (150°C) oven for 5 to 8 minutes. The microwave works in a pinch but softens the crumble, so use the oven if you can.
- Serve cold: straight from the fridge if you like a denser, chewier bar.
Frequently Asked Questions
Can I use store-bought apple pie filling?
No, it is usually too sweet and the liquid is too thin. The bars need the thick, sticky consistency of a homemade filling so the crust stays firm.
How do I keep the bottom crust from getting soggy?
The blind-bake in Step 1 sets the crust and creates a barrier. Also, tossing the apples with flour draws out just enough moisture to thicken the juices without drowning the base.
Can I freeze these apple pie bars?
Yes. Wrap the fully cooled slab tightly in plastic wrap, then foil, and freeze for up to 3 months. Thaw overnight in the fridge and reheat in a low oven before slicing.
Is it okay to use all Granny Smith apples?
It works, but the bars will be more tart. You could bump the brown sugar in the filling by a tablespoon or two to balance the sharpness.
Apple Pie Bars Recipe
Ingredients
Method
- Preheat oven to 350°F (175°C). Line a 9×13-inch pan with parchment. Pulse crust flour, sugar, and salt. Add cold butter and pulse to damp crumbs. Press firmly into pan. Bake 15 to 18 minutes until pale gold at the edges.
- Toss sliced apples with brown sugar, 2 tbsp flour, lemon juice, cinnamon, nutmeg, and salt. Let sit 5 minutes.
- Combine crumble flour, brown sugar, oats, and cinnamon. Cut in cold butter until pea-sized clumps form. Keep cold.
- Spoon apples over the warm crust and press lightly. Scatter crumble over the top. Bake 30 to 35 minutes until bubbling and deep golden.
- Cool completely in the pan on a rack. Lift out with parchment, slice into 12 squares, and serve.
