Flaky Apple Rhubarb Pie with a Golden, Buttery Crust
This apple rhubarb pie is everything you want in a spring dessert: a buttery, flaky crust wrapped around sweet apples and tangy rhubarb, all held together by a jammy, just-sweet-enough filling.
It’s the kind of pie that feels like a project but comes together with a few simple techniques, and the reward is a slice that’s bursting with bright fruit flavor.
What Makes This Pie So Good
The filling gets its character from the rhubarb’s sharpness and the apples’ gentle sweetness. You don’t need a mountain of sugar; a little lemon zest and brown sugar bring out the fruit’s natural flavor without turning it syrupy.
And the crust is all butter, rolled a bit thicker than usual, so it shatters into buttery flakes when you take a bite. The whole thing tastes like a farmers’ market in late spring.
Ingredients
For the pastry:
- 2 ½ cups (315g) all-purpose flour, spooned and leveled: use a scale for the most consistent dough
- 1 tsp kosher salt:
- 1 tbsp granulated sugar:
- 1 cup (227g) cold unsalted butter, cut into ½-inch cubes:
- 6 to 8 tbsp ice water: add a spoonful at a time until the dough just comes together
For the filling:
- 4 cups sliced rhubarb, cut into ½-inch pieces: about 1 pound, pink stalks are prettier but green works fine
- 3 cups peeled and sliced firm-tart apples: 3 medium apples like Granny Smith, cut into ¼-inch wedges
- ¾ cup (150g) packed light brown sugar: use a full cup if your rhubarb is exceptionally sour
- ¼ cup (30g) cornstarch:
- 1 tsp finely grated lemon zest:
- 1 tbsp fresh lemon juice:
- ½ tsp ground cinnamon:
- ¼ tsp salt:
- 2 tbsp cold unsalted butter, cut into small pieces: for dotting on top before the top crust
Variations / Substitutions
- Swap the top crust for a lattice or crumble: a lattice shows off the bubbling fruit, while a buttery oat crumble saves you from rolling a second layer.
- Use all strawberries instead of rhubarb: the flavor will be sweeter and less tangy, so reduce the sugar to ½ cup and add an extra tablespoon of cornstarch.
- Add a teaspoon of grated fresh ginger to the filling: it gives the fruit a warm, spicy edge that cuts through the richness of the crust.
- Make it gluten-free: use a 1-to-1 gluten-free flour blend for the pastry, and expect a slightly more fragile dough that you’ll want to press into the pan rather than roll.
If you’re short on time, try my Easy Apple Crumble, a simple recipe that delivers the same fruit flavor without the pastry.
How To Make Flaky Apple Rhubarb Pie
Step 1: Cut the Butter Into the Flour
Whisk together the 2 ½ cups flour, 1 teaspoon salt, and 1 tablespoon sugar in a large bowl. Add the 1 cup cold butter cubes and toss them until each piece is coated with flour. Use a pastry blender or your fingertips to cut the butter into the flour until the mixture looks like coarse meal with some pea-sized butter pieces still visible, about 3 to 4 minutes.
The mixture will feel dry and sandy, and you’ll see distinct pale chunks of butter throughout. Those visible butter bits are what create layers of flaky pastry, so don’t overwork them.
It’s normal to worry you haven’t incorporated the butter enough, but those small visible pockets are exactly what you want. If the mixture starts to feel greasy or you lose all the butter chunks, chill the bowl in the fridge for 10 minutes before adding water.
Step 2: Roll Out the Crust
Drizzle 4 tablespoons of the ice water over the flour mixture and stir gently with a fork. Add more water, 1 tablespoon at a time, until the dough starts to clump together when you squeeze a handful. Turn the dough onto a clean counter and gather it into a ball, then divide it into two discs, one slightly larger than the other. Wrap each in plastic and refrigerate for at least 1 hour, until firm but still pliable.
The dough should be smooth and hold its shape but still feel cool and slightly stiff. When you press it with a finger, it should leave a slight indent without cracking.
Chilling the dough relaxes the gluten and keeps the butter cold, which prevents the crust from shrinking in the oven. If you’re in a hurry you can chill it for 30 minutes in the freezer, but an hour in the fridge gives the flour time to hydrate.
Step 3: Toss the Fruit Filling
In a large bowl, combine the 4 cups sliced rhubarb, 3 cups sliced apples, ¾ cup brown sugar, ¼ cup cornstarch, 1 teaspoon lemon zest, 1 tablespoon lemon juice, ½ teaspoon cinnamon, and ¼ teaspoon salt. Toss everything with a rubber spatula until the fruit is evenly coated, then let it sit at room temperature for 15 minutes so the juices begin to draw out.
The fruit will glisten and start to release its liquid, which will form a light syrup in the bottom of the bowl. Don’t drain this liquid—the cornstarch needs it to create a thick, saucy filling as it bakes.
Stir the mixture once or twice while it sits so the sugar and cornstarch dissolve evenly. The rhubarb and apples will soften slightly and cling together, which makes it easier to mound them into the crust later.
Step 4: Assemble the Pie
On a lightly floured surface, roll the larger disc of dough into a 12-inch circle about ⅛ inch thick. Ease it into a 9-inch pie dish and gently press it into the corners. Trim the overhang to 1 inch. Roll the second disc into an 11-inch circle. Spoon the fruit filling into the bottom crust, mounding it slightly in the center, and scatter the 2 tablespoons of cold butter pieces over the top.
The filling will look generous and uneven, piling high above the edge of the dish. That’s a good sign—the fruit will collapse and settle as it bakes, so don’t pack it down.
Lay the top crust over the fruit, fold the overhang under the bottom crust edge, and crimp the two layers together to seal. Cut 4 slits in the top crust for steam to escape. If the dough feels warm or sticky at any point, pop the whole pie in the fridge for 10 minutes before adding the top crust.
Step 5: Bake Until Golden and Bubbling
Preheat your oven to 425°F (220°C) with a rack in the lower third. Place the pie on a foil-lined baking sheet to catch any drips. Bake for 15 minutes, then reduce the oven temperature to 375°F (190°C) and continue baking for 40 to 50 minutes more. Check the crust after 30 minutes; if the edges are browning too quickly, cover them loosely with strips of foil or a pie shield.
The pie is done when the filling is actively bubbling through the vents and the crust is deep golden brown. You’ll smell the sweet, tangy fruit long before the timer goes off, and the juices will look thick and jammy around the edges.
This long bake is necessary—rhubarb needs time to break down completely and release its liquid, and the high starting heat sets the crust so it stays flaky underneath. Don’t pull the pie early just because the top looks golden; wait for those thick, slow bubbles.
Step 6: Slice and Serve
Transfer the pie to a wire rack and let it cool for at least 2 to 3 hours. This is the hardest step, but it lets the filling set so the slices hold their shape. Run a sharp knife around the edges, then cut into wedges, lifting each slice with a pie server.
The crust will crackle under your knife and the filling will be glossy, with fruit that stays in place rather than spilling onto the plate.
Serve the pie warm or at room temperature, with a scoop of vanilla ice cream or a billowy dollop of whipped cream. The contrast of cold cream against the warm, jammy fruit is exactly what you want on a spring afternoon.
A Few Things to Keep in Mind
- Place your butter in the freezer for 15 minutes before you start. Even slightly warmer butter can lead to a tougher crust, and the frozen cubes stay intact longer while you work.
- Use a mix of apple varieties for more complex flavor. Granny Smith brings tartness, but a few Honeycrisp or Pink Lady slices add a floral sweetness that plays nicely against the rhubarb.
- The long cooling time is not optional. Cutting into a hot pie will give you a soupy mess; give it a full 2 hours and the filling will be sliceable.
- If your rhubarb is very pale and sour, add an extra 2 tablespoons of sugar to the filling. Taste a raw piece first—if it makes you pucker, adjust the sweetness.
Bake times vary by a few minutes depending on your pie dish. Keep an eye on the color and bubbling, and use these as a guide:
| Dish Material | Time After Reducing to 375°F | Notes |
|---|---|---|
| Glass (Pyrex) | 40 to 45 minutes | You’ll see the bottom browning through the glass; look for golden color. |
| Dark metal | 35 to 40 minutes | Heats faster; check for bubbling a few minutes earlier. |
| Ceramic or stoneware | 45 to 50 minutes | Slower to conduct heat; the crust may need a few extra minutes to fully brown. |
Keeping Leftovers Fresh
Store any leftover pie loosely covered with foil or plastic wrap at room temperature for up to 1 day, or refrigerate for up to 4 days. To recrisp the crust, place slices in a 350°F (175°C) oven for 8 to 10 minutes. You can also eat it cold straight from the fridge—the filling thickens even more as it chills, which makes for a neat, almost candy-like slice.
What to Serve With the Pie
Vanilla ice cream is the classic pick for a reason: the cold, sweet cream tones down the rhubarb’s tang and melts into the hot filling. A sharp cheddar slice adds a savory, salty note that makes the fruit taste deeper, in the old-school New England way. And a mound of lightly sweetened whipped cream, with a pinch of cinnamon or nutmeg, keeps things airy and simple.
Frequently Asked Questions
Can I use frozen rhubarb?
Yes, thaw it completely in a colander and press out as much liquid as you can before measuring. Frozen rhubarb releases more water, so add an extra tablespoon of cornstarch to the filling.
Why is my pie runny?
Underbaking is the most common culprit. The filling needs to bubble thickly through the vents before you pull it from the oven, and it must cool completely to set. If the bubbles are thin and watery when you take it out, it’s not ready.
Can I make the whole pie ahead?
The pastry dough and the dry filling ingredients can be prepped a day in advance and refrigerated, but the assembled pie is best baked the day you plan to serve it. If you need to bake ahead, let it cool fully, then reheat slices in a warm oven.
Do I need to blind bake the crust?
No, this pie is baked with the filling inside from the start, and the bottom crust cooks through just fine during the long bake. The foil-lined baking sheet underneath helps conduct heat to the bottom, so you don’t end up with a soggy layer.
Flaky Apple Rhubarb Pie Recipe
Ingredients
Method
- Whisk flour, salt, and sugar in a bowl. Cut in the 1 cup cold butter until pea-sized pieces remain. Stir in ice water a tablespoon at a time until dough just holds together. Divide into two discs, wrap, and chill at least 1 hour.
- Roll the larger disc into a 12-inch circle and fit into a 9-inch pie dish; roll the smaller disc into an 11-inch circle. Trim bottom crust overhang to 1 inch.
- Toss rhubarb, apples, brown sugar, cornstarch, zest, lemon juice, cinnamon, and salt in a bowl. Let sit 15 minutes, stirring once or twice.
- Mound filling into the bottom crust, dot with 2 tbsp butter. Top with the second crust, fold edges under, crimp to seal, and cut steam vents.
- Preheat oven to 425°F with rack in lower third. Place pie on a foil-lined sheet and bake 15 minutes. Lower to 375°F and bake 40 to 50 minutes more, until filling bubbles thickly and crust is deep golden. Cover edges with foil if browning too fast.
- Cool on a rack at least 2 to 3 hours, then slice and serve.
Notes
