
This Apple Slab Pie is buttery, flaky, and loaded with cinnamon-spiced apples, perfect for feeding a crowd with easy slices instead of wedges.

If you've ever loved apple crisp with pie crust or dreamed up new recipes with pie filling, this Apple Slab Pie is about to become your new fall obsession. Instead of fussing over a single round pie, we bake this one in a sheet pan, which means more flaky, buttery crust in every bite and a dessert that easily feeds a crowd. It's essentially an easy apple pie crust situation, but bigger, faster to slice, and way less stressful for holidays or potlucks.
This recipe walks the line between homemade apple desserts and pure convenience. Whether you're a seasoned baker or you're just starting to explore recipes with pie crust, this one is nearly foolproof.
Before we get cooking, the right tools and ingredients make a real difference here. A good rolling pin, a sturdy half sheet pan, and quality store-bought pie crust (or your own favorite dough) will make assembly so much smoother, and a reliable pastry brush ensures that golden, glossy finish on top.
The magic of a good apple tart with pie crust, or in this case a full slab pie, comes down to two things: properly seasoned apples and a crust that doesn't get soggy. That's why we toss the apples with a bit of flour before baking. The flour absorbs excess moisture as the apples release their juices in the oven, giving you a filling that's jammy and thick rather than watery.
When picking your apples, look for a mix of tart and sweet varieties. Granny Smith apples hold their shape beautifully and add tartness, while Honeycrisp or Braeburn bring natural sweetness and a nice bite.
Chef's Tip: Slice your apples thin and uniform, about a quarter inch thick. This helps them cook evenly so you don't end up with crunchy spots next to mushy ones.
This recipe technically uses a top and bottom crust, but because it's spread across a sheet pan, it bakes and slices more like an easy apple pie crust bar than a traditional pie. That's part of the appeal. You get all the flaky, buttery goodness of a one crust apple pie doubled, minus the hassle of crimping a round pie plate.
Using store-bought refrigerated crusts keeps things simple, especially if this is one of the easy apple pie crust recipes you're making on a weeknight. Just let the dough sit at room temperature for a few minutes before unrolling so it's pliable and doesn't crack.
Ready to make it? Here is the full step-by-step recipe:

This Apple Slab Pie is buttery, flaky, and loaded with cinnamon-spiced apples, perfect for feeding a crowd with easy slices instead of wedges.
Preheat the oven to 400 degrees F (200 degrees C). Line a large half sheet pan (about 13x18 inches) with parchment paper.
Unroll two of the pie crusts and overlap their edges slightly, pressing the seam together. Roll gently with a rolling pin to smooth and slightly enlarge until the crust fits into the bottom and up the sides of the sheet pan.
In a large bowl, toss the sliced apples with granulated sugar, brown sugar, flour, cinnamon, nutmeg, and lemon juice until evenly coated.
Spread the apple mixture evenly over the crust in the pan. Dot the top of the filling with the small pieces of butter.
Unroll the remaining two pie crusts, overlap and press the seam together as before, then lay this crust over the apple filling. Trim any excess dough and crimp or fold the edges to seal.
Cut several small slits in the top crust to allow steam to escape. Brush the entire top with the beaten egg and sprinkle with coarse sugar if using.
Bake for 40 to 45 minutes, or until the crust is deep golden brown and the filling is bubbling through the slits.
Let the slab pie cool on the pan for at least 30 minutes on a wire rack before slicing.
While the pie cools, whisk together powdered sugar and milk until smooth to make a glaze. Drizzle over the pie just before serving, if desired.
Slice into squares and serve warm or at room temperature.
This Apple Slab Pie is one of those fall pies recipes easy enough for a Tuesday night but impressive enough for Thanksgiving dessert table. Serve it warm with a scoop of vanilla ice cream, or let it cool completely and drizzle with the simple powdered sugar glaze for a bakery-style finish.
A few serving and storage notes:
Chef's Tip: If you love experimenting with recipes with pie filling, try swapping half the apples for pears or adding a handful of dried cranberries for a festive twist.
However you slice it, this slab pie is proof that some of the best homemade apple desserts don't need to be complicated. Simple ingredients, a little patience, and a hot oven are all it takes.