Strawberry Pop Tart Slab Pie

April 20, 2026

The quickest way to get that pop-tart vibe without fiddling with individual pastries is to bake it as a slab pie: two big sheets of buttery crust, a juicy strawberry layer in the middle, and a simple powdered sugar icing on top. It’s the kind of dessert that looks like you did a lot more work than you did—especially once you slice it into neat squares.

This Strawberry Pop Tart Slab Pie hits all the right notes: flaky edges, a jammy strawberry center that smells like warm vanilla, and that sweet, crackly glaze after it cools. If you’ve ever made my classic strawberry pop tart pie, this is the more shareable, bake-for-a-crowd version.

Why You’ll Love This Recipe

It’s a true slab pie: rolled into a baking-sheet shape, so you get lots of corner pieces with extra flaky crust.
The filling is fresh strawberries + cornstarch, so it bakes up thick and sliceable instead of runny.
A quick egg wash gives you that glossy, golden top that looks “bakery” with almost no effort.
The icing is just powdered sugar and milk—easy to adjust until it drizzles exactly how you want.
It’s made from pantry basics (flour, sugar, butter) and one bowl for the fruit filling.
Slices travel well for picnics and potlucks—especially once the glaze sets.

The Story Behind This Recipe

I wanted the look and flavor of a strawberry toaster pastry, but in a format I could cut into a dozen pieces for sharing—no crimping tiny rectangles, no batch baking. This slab version keeps the same spirit: flaky pastry, strawberry-vanilla filling, and that simple white icing that makes it unmistakably “pop tart.”

What It Tastes Like

This one is sweet but not candy-sweet: the berries bring bright, slightly tart fruitiness, while the vanilla rounds everything out. The crust bakes up buttery and crisp on the edges, with a tender bite under the filling. Once iced, you get that classic contrast—warm, jammy strawberry against a smooth, sugary glaze that sets into a thin shell.

Ingredients You’ll Need

Cold butter is doing the heavy lifting here—it’s what makes the crust flaky instead of sandy, so keep it cubed and chilled until the last moment. Cornstarch is the key to a sliceable strawberry layer; it turns the fruit juices into a glossy, jammy filling as it bakes. If your strawberries are very sweet, the filling will taste more like strawberry candy; if they’re a little tart, the flavor reads brighter and more “fresh berry.” For more pie inspiration, I keep a running collection in my pies and tarts archive.

2 cups all-purpose flour
1 teaspoon salt
1 tablespoon granulated sugar
1 cup unsalted butter, cold and cubed
6-8 tablespoons ice water
2 cups fresh strawberries, hulled and sliced
3/4 cup granulated sugar
1 tablespoon cornstarch
1 teaspoon vanilla extract
1 egg, beaten (for egg wash)
Powdered sugar (for icing)
Milk (for icing)

How to Make Strawberry Pop Tart Slab Pie

Preheat and prep. Heat the oven to 375°F (190°C). Get a baking sheet ready (you’ll be building the pie directly on it).
Mix the dry ingredients. In a large bowl, stir together the flour, salt, and 1 tablespoon sugar until evenly combined.
Cut in the butter. Add the cold, cubed butter and cut it into the flour mixture until it looks like coarse crumbs with some pea-sized bits still visible. (Those little butter pieces are what melt and create flaky layers.)
Add ice water just until it comes together. Stir in ice water, 1 tablespoon at a time, until the dough forms. Stop as soon as it holds together when you press it—if it feels wet or sticky, you’ve gone a little too far.
Chill the dough. Divide into two disks, wrap in plastic, and refrigerate for at least 30 minutes. This firms the butter back up so your crust bakes flaky instead of slumping.
Roll the bottom crust. On a floured surface, roll out one disk into a rectangle large enough to fit your baking sheet. Transfer it to the baking sheet and gently press it flat so there aren’t big air pockets underneath.
Make the strawberry filling. In a bowl, mix sliced strawberries, 3/4 cup sugar, cornstarch, and vanilla. It should look sandy at first from the sugar and starch, then quickly turn glossy as the berries start releasing juice. Spread the mixture evenly over the bottom crust.
Top, seal, and vent. Roll out the second disk and place it over the filling. Seal the edges well (this keeps the strawberry juices from bubbling out the sides). Cut a few slits on top so steam can escape. Brush the top with beaten egg for a deeper golden finish.
Bake. Bake for 25–30 minutes, until the top is golden brown and you can see the filling bubbling a bit through the vents. If the top is still pale at 25 minutes, give it a few more.
Cool before icing. Let the slab pie cool so the filling can set up. Stir together powdered sugar and milk until you get a thick-but-drizzleable icing, then spread or drizzle it over the top. (If you ice while it’s hot, the glaze will melt and soak in.)
Slice and serve. Once the icing has had a few minutes to settle, slice into squares. For extra clean cuts, wipe your knife between slices. If you love pop-tart-style treats, my brown sugar pop tart cookies are another fun project.

Tips for Best Results

Keep everything cold at the start. Cold butter + ice water helps you get a crust that bakes into flakes instead of a dense, greasy layer.
Don’t overwork the dough. Mix just until it forms—too much handling makes the crust tougher and less tender.
Seal the edges like you mean it. Strawberry filling loves to find weak spots; a good seal helps keep the juices inside the slab.
Vent the top. Those slits aren’t decorative—they let steam escape so the top crust doesn’t puff, crack, or get soggy.
Cool fully before glazing. The filling thickens as it cools, and the icing stays bright white and defined instead of disappearing into the crust.

Variations and Substitutions

Make it more “jammy”: Slice the strawberries a bit thinner so they melt down more evenly as they bake.
Change the icing thickness: Use a little more milk for a drippier glaze, or less milk for a thicker, more opaque finish.
If you’re in a fruit-pie mood, my brown butter strawberry peach pie is a great next bake when you want a deeper, caramel-y note.

How to Serve It

Serve slices at room temperature for the neatest layers: flaky crust, thick strawberry filling, and that set icing on top. I love it cut into small squares for a snack tray, or into bigger pieces when you want the full pop-tart effect with lots of filling in each bite.

How to Store It

Store leftover slab pie covered in the refrigerator so the strawberry filling stays firm. If you’re making it ahead, bake and cool the pie first, then ice closer to serving for the cleanest-looking glaze. For longer storage, you can freeze the baked, un-iced slab and add the powdered sugar icing after thawing so it doesn’t weep or turn dull.

Final Thoughts

If you want a dessert that slices like a bar but eats like a flaky strawberry pie, this one delivers—golden top, jammy center, and that simple white icing that screams “pop tart” in the best way.

Conclusion

If you’re curious to compare slab-pie approaches, I’ve bookmarked a few solid spins on the idea, including Food52’s strawberry pop-tart slab pie, Sprinkle Bakes’ giant strawberry pop tart, and The Cooking of Joy’s strawberry pop tart slab pie—they’re great for seeing different finishing styles while keeping that same flaky crust + strawberry filling payoff.