The Best Rhubarb Pie Recipe – Easy, Sweet & Tart Summer Dessert

There is nothing quite like the first rhubarb pie of the season. The moment you pull it from the oven, with its golden, flaky crust and ruby-red filling bubbling through the vents, you know spring has truly arrived. For anyone who grew up picking rhubarb from a backyard patch or swapping bags of fresh stalks with a neighbor, this pie is pure nostalgia. For those new to rhubarb, get ready to discover a dessert that balances sweet and tart in a way no other fruit can match. The best rhubarb pie is not overly sweet—it lets the vegetable’s natural brightness shine, supported by just enough sugar to make it feel like a proper treat.

After testing dozens of batches over the years, I have landed on a recipe that consistently delivers the perfect texture and flavor. The filling is thick and jammy, never runny or watery. The crust is buttery, tender, and holds its shape slice after slice. And the rhubarb itself keeps a little bit of structure, so you get those lovely, soft-tender bites rather than a shapeless mush. Whether you serve it warm with a scoop of vanilla ice cream or at room temperature with a cup of coffee, this pie earns its title as the best rhubarb pie you will ever make.

This recipe is designed for home bakers ages 40 to 65+ who appreciate classic desserts done right. There are no hard-to-find ingredients or complicated techniques. You do not need a stand mixer or a pastry cutter—a simple fork or your fingertips will do. I will walk you through every step, from choosing the perfect rhubarb stalks to achieving a crimped edge that would make your grandmother proud. Let us preheat that oven.

Alternate Names & Variations

Depending on where you live or whom you ask, this dessert goes by several names. You might see Old-Fashioned Rhubarb Pie, Spring Rhubarb Pie, or Grandma’s Rhubarb Pie. When strawberries are added, it becomes Strawberry Rhubarb Pie—the most popular variation nationwide. Some recipes call it Rhubarb Custard Pie if eggs are added for a creamy, chess-pie-like texture. Rhubarb Crumb Pie (or Rhubarb Crumble Pie) swaps the top crust for a buttery streusel topping, which is wonderful for beginners.

Classic variations to try:

• Strawberry Rhubarb Pie: Replace 2 cups of rhubarb with 2 cups of sliced fresh strawberries. Reduce sugar slightly because strawberries are sweeter.
• Ginger Rhubarb Pie: Add 2 tablespoons of finely chopped crystallized ginger and 1 teaspoon of fresh grated ginger to the filling. The spicy warmth pairs beautifully with rhubarb.
• Orange-Scented Rhubarb Pie: Add 1 tablespoon of orange zest and 2 tablespoons of orange juice to the filling. Orange brightens rhubarb’s tartness.
• Lattice-Top Rhubarb Pie: Instead of a full top crust, weave a lattice for a beautiful, bakery-style look.
• Rhubarb Custard Pie: Beat 2 eggs into the sugar mixture before adding the rhubarb, creating a silky, lemon-bar-like consistency. Bake at a slightly lower temperature (375°F) to prevent curdling.

For a lower-sugar version, use a sugar substitute like allulose or a ½ cup of honey (reduce other liquid accordingly). You can also mix in 1 cup of raspberries or blackberries for a berry-rhubarb twist.

Ingredients: The Best Rhubarb Pie

For the double pie crust (or use your favorite homemade or store-bought):

• 2½ cups all-purpose flour (plus more for rolling)
• 1 teaspoon salt
• 1 teaspoon granulated sugar (optional, for flavor)
• 1 cup (2 sticks) unsalted butter, very cold and cut into ½-inch cubes
• 6–8 tablespoons ice water

For the rhubarb filling:

• 5 to 6 cups fresh rhubarb, cut into ½-inch pieces (about 1½ pounds; see note for frozen)
• 1¼ cups granulated sugar (adjust based on tartness)
• ¼ cup cornstarch (or ⅓ cup all-purpose flour for a cloudier filling)
• 1 tablespoon fresh lemon juice
• 1 teaspoon finely grated lemon zest (optional, but recommended)
• ¼ teaspoon salt
• 2 tablespoons unsalted butter, cut into small pieces (for dotting the filling)

For the egg wash (optional but beautiful):

• 1 large egg
• 1 tablespoon water or milk
• Coarse sanding sugar for sprinkling

Ingredient note: Do not peel the rhubarb. Simply wash it, trim the ends, and cut it into pieces. If your rhubarb has very thick stalks, slice them lengthwise first so the pieces are no wider than ½ inch.

Step-by-Step Instructions: The Best Rhubarb Pie

1. Make the pie dough (or prepare your store-bought crust).
In a large bowl, whisk together the flour, salt, and sugar. Add the cold butter cubes. Using a pastry blender, two forks, or your fingertips, cut the butter into the flour until the mixture resembles coarse meal with pea-sized butter bits. Drizzle in 6 tablespoons of ice water, tossing with a fork. Add more water, 1 tablespoon at a time, until the dough just comes together when squeezed. Do not overwork. Divide dough into two discs, wrap in plastic, and refrigerate for at least 1 hour (or up to 3 days).

2. Preheat and prepare.
Preheat your oven to 400°F (200°C). Place a baking sheet on the lower rack to catch any drips. Remove one dough disc from the refrigerator and let it sit for 5–10 minutes to soften slightly.

3. Roll out the bottom crust.
On a lightly floured surface, roll the dough into a 12-inch circle about ⅛-inch thick. Transfer to a 9-inch pie plate (preferably glass or ceramic). Gently press the dough into the bottom and up the sides. Trim the overhang to about ½ inch beyond the rim. Refrigerate while you prepare the filling.

4. Make the rhubarb filling.
In a large bowl, combine the rhubarb pieces, sugar, cornstarch, lemon juice, lemon zest, and salt. Toss gently until the rhubarb is evenly coated. Let the mixture sit for 10–15 minutes. This maceration step draws out excess juice, preventing a watery pie.

5. Roll out the top crust (or prepare lattice/crumb topping).
Roll the second dough disc into a 10-inch circle. Using a sharp knife or pastry wheel, cut vents or cut into strips for a lattice. If using a solid top crust, cut 4–5 slits for steam to escape.

6. Assemble the pie.
Pour the rhubarb filling into the chilled bottom crust, including any juices that have accumulated. Dot the filling with the small pieces of butter. Place the top crust over the filling. Fold the overhang of the bottom crust over the edge of the top crust, then crimp with your fingers or a fork. For a lattice, weave the strips over the filling, then trim and crimp the edges.

7. Apply egg wash and sugar.
Beat the egg with water or milk. Brush the top crust (but not the crimped edges, which burn easily). Sprinkle generously with sanding sugar.

8. Bake the pie.
Place the pie on the preheated baking sheet (to catch spills). Bake at 400°F for 20 minutes. Then reduce the oven temperature to 350°F (175°C) and bake for another 35–45 minutes, until the crust is deep golden brown and the filling is bubbling thickly through the vents. If the crust edges brown too quickly, cover them with a pie shield or strips of aluminum foil.

9. Cool completely before slicing.
This is the hardest step, but it is essential. Let the pie cool on a wire rack for at least 3–4 hours. The filling needs time to set; cutting too soon will result in a runny mess. Serve at room temperature or slightly warm.

*Chef’s tip: For an extra-thick, jammy filling, let the macerated rhubarb drain in a colander for 15 minutes, then boil the collected juice with 1 tablespoon of cornstarch until thickened before adding back to the rhubarb. This guarantees no soggy bottom.*

Recipe Card Reference: The Best Rhubarb Pie

Prep Time: 30 minutes (plus 1 hour dough chilling)
Cook Time: 55–65 minutes
Total Time: 2 hours 30 minutes (plus cooling)
Servings: 8 generous slices
Calories: Approximately 480–550 per slice (depending on crust thickness and sugar)

This recipe makes one 9-inch double-crust pie. The calorie estimate includes a standard butter crust and the full amount of sugar. For a lighter pie, reduce sugar to 1 cup and use a lower-fat crust (though the texture will differ). Leftover pie keeps well for several days—if it lasts that long.

Why This Recipe Works & Expert Tips: The Best Rhubarb Pie

The science of a non-runny filling. Rhubarb is composed of over 90% water. As it bakes, it releases that water, which can turn your pie into soup. This recipe combats that in three ways: macerating the rhubarb with sugar and lemon juice draws out excess moisture before baking; cornstarch (rather than flour) creates a clear, stable gel; and the initial high heat (400°F) sets the bottom crust quickly before the filling has time to soak through. The result is a pie that slices cleanly and holds its shape.

Why you should not reduce the sugar too much. Rhubarb is intensely tart—more so than lemons. The 1¼ cups of sugar here is not just for sweetness; it also helps extract pectin from the rhubarb, thickening the filling naturally. If you cut the sugar below 1 cup, you risk a sour, thin pie. That said, if your rhubarb comes from a late-summer second harvest (often sweeter), you can reduce sugar by 2 tablespoons.

Expert tip #1: Choose the right rhubarb. Look for thin to medium stalks (about ½ to ¾ inch thick). Thick, woody stalks are often stringy and less flavorful. The color—pink, red, or green—does not indicate ripeness or sweetness, but deep red stalks tend to produce a prettier pie. Avoid limp or rubbery stalks.

Expert tip #2: Blind bake for extra insurance. If you are worried about a soggy bottom, partially blind bake the bottom crust before adding the filling. Line the chilled crust with parchment, fill with pie weights or dried beans, and bake at 400°F for 12 minutes. Remove weights and parchment, then add the filling and top crust. This works especially well for juicy fruits.

Expert tip #3: Freeze the butter and flour for the crust. For the flakiest dough, freeze the butter cubes for 15 minutes and chill the flour in the refrigerator. Cold fat creates steam pockets in the oven, leading to those coveted flaky layers.

Storage, Freezing, and Reheating

Room temperature storage: Baked rhubarb pie will keep at room temperature, loosely covered, for up to 2 days. After that, refrigerate to prevent spoilage (the high sugar content acts as a preservative, but dairy in the crust can turn). Cover with foil or a pie keeper.

Refrigeration: Store leftover pie in the refrigerator for up to 5 days. Bring slices to room temperature before serving, or reheat gently. Cold rhubarb pie is also delicious straight from the fridge—some people prefer it that way.

Freezing (unbaked): This pie freezes beautifully before baking. Assemble the pie completely in a disposable aluminum pie plate (or a freezer-safe dish). Do not cut vents. Wrap tightly in plastic wrap, then in foil. Freeze for up to 3 months. To bake from frozen: remove wraps, cut vents, brush with egg wash, and bake at 400°F for 30 minutes, then reduce to 350°F and bake for 50–60 minutes longer. No need to thaw.

Freezing (baked): Cool the baked pie completely, then wrap tightly and freeze for up to 2 months. Thaw overnight in the refrigerator, then reheat in a 300°F oven for 15–20 minutes to refresh the crust.

Reheating slices: The best way to reheat a single slice is in a toaster oven or conventional oven at 300°F for 8–10 minutes. The microwave will make the crust soggy—avoid it if possible.

People Also Ask: The Best Rhubarb Pie

Should you peel rhubarb for pie?

No, you should never peel rhubarb for pie. The thin, red or green skin is tender and becomes perfectly soft during baking. Peeling is unnecessary work and removes much of the color, making your pie look pale. Simply wash the stalks thoroughly, trim the very ends (where the leaves were attached and the root end), and cut the rhubarb into ½-inch pieces. If you encounter any tough, stringy outer fibers on very thick stalks (over 1 inch wide), you can gently pull them off with a paring knife, but this is rarely needed.

How do you keep rhubarb pie from being runny?

The key is maceration, proper thickener, and adequate cooling. First, toss the cut rhubarb with sugar and let it sit for 15–20 minutes. This draws out excess liquid, which you can either drain or cook down. Second, use cornstarch rather than flour—cornstarch has twice the thickening power. Third, bake the pie until the filling is visibly bubbling through the vents, not just steaming. Bubbling indicates the cornstarch has activated. Finally, cool the pie completely, ideally 3–4 hours at room temperature. Cutting a warm pie guarantees a runny filling, no matter how perfect your recipe.

What is the best thickener for rhubarb pie?

Cornstarch is widely considered the best thickener for rhubarb pie because it creates a clear, glossy, and stable gel that does not break down during the long bake time. Use ¼ cup of cornstarch for every 5–6 cups of rhubarb. Tapioca starch (also called tapioca flour) is an excellent second choice—use 3 tablespoons. Instant tapioca pearls (minute tapioca) work well too: crush 2 tablespoons of pearls before adding. Avoid flour alone, as it leaves a cloudy, pasty texture and requires nearly double the amount (⅓ cup). For a combination, try 2 tablespoons cornstarch plus 2 tablespoons flour for a more traditional “homemade” look.

Can you use frozen rhubarb for pie?

Yes, frozen rhubarb works wonderfully in pie, and you can use it without thawing first. Measure 6 cups of frozen rhubarb pieces (about 1½ pounds). Increase the cornstarch to 5 tablespoons (or 3 tablespoons tapioca) because frozen fruit releases more water. Add an extra 2 tablespoons of sugar. Do not thaw—the ice crystals will make the filling watery. Toss the frozen rhubarb directly with the sugar, cornstarch, and lemon juice, then assemble the pie immediately. Bake as directed, adding 10–15 minutes to the total baking time to compensate for the cold starting temperature.

Conclusion: The Best Rhubarb Pie

This is the rhubarb pie I have baked for every spring gathering, every church potluck, and every quiet Tuesday when I just needed a taste of sunshine on a plate. It is simple, honest, and deeply satisfying. Whether you are a lifelong rhubarb enthusiast or a curious first-timer, I hope this recipe becomes a tradition in your kitchen as it has in mine. There is magic in the way tart and sweet come together inside a buttery, golden crust—a reminder that the best things in life are often the ones we take time to make from scratch.

If you bake this pie, please leave a comment or tag your photos. I love seeing your lattice work, your crimped edges, and the happy faces around your table. And do not forget to share this recipe with someone who could use a little springtime joy.

You Might Also Like:

Find Us On Pinterest and Facebook.

Print