Rhubarb Pie Recipe Vegan: Tart-Sweet Filling With Flaky Crust

This vegan rhubarb pie recipe delivers all the classic tart-sweet perfection without a single drop of dairy or egg. The secret lies in a flaky crust made with coconut oil and flax eggs, paired with a filling that balances rhubarb's natural acidity with just the right amount of sweetness.

I've perfected this recipe over years of testing—each slice offers that signature crunch, tender filling, and clean vegan ingredients that still satisfy even the most devoted dessert lovers.

The crust starts with a simple blend of flour, coconut oil, and flax eggs that creates that coveted flakiness, while the filling combines chopped rhubarb with a touch of maple syrup and cornstarch for thickening. No butter or eggs here, yet the texture remains rich and satisfying.

The key is baking the filling just until it's set but still slightly jiggly in the center—this ensures maximum flavor and that perfect balance of tart and sweet.

What you'll end up with is a pie that looks and tastes indistinguishable from traditional recipes, complete with a golden crust and vibrant pink filling. The aroma alone will have everyone gathering around your table, and each bite delivers that perfect harmony of textures and flavors.

This is vegan baking at its finest—proof that plant-based desserts can be just as impressive as their dairy-filled counterparts.

Perfect for spring and summer when rhubarb is at its peak, this pie also freezes beautifully for later enjoyment. The recipe scales easily for gatherings, and you can even make the crust ahead of time for convenience.

Let's get started on creating a dessert that will impress everyone at your table.

Ingredients for rhubarb pie recipe vegan

Nine simple ingredients create a vegan rhubarb pie with flaky crust and perfect tart-sweet balance.

The rhubarb is the star—look for bright pink stalks with crisp texture, not mushy or slimy pieces. Local farmers markets usually have the freshest, but grocery stores work too. Chop it into even 1-inch pieces for consistent cooking. For the crust, Bob’s Red Mill all-purpose flour or King Arthur gives the best texture, but any high-quality brand works. The coconut oil must be solid (not melted)—this ensures flaky layers. Trader Joe’s and Costco sell pre-chopped rhubarb in spring, saving you time. If you can’t find fresh rhubarb, frozen works in a pinch—just thaw and drain well.

No flaxseed meal? Chia seeds work too—just double the amount. Running short on sugar? Maple syrup or agave at a 1:1 ratio keeps it vegan-friendly. The lemon juice brightens the filling—never skip this. For extra richness, add 1 tbsp vegan butter to the crust dough. No vanilla? Vanilla bean paste or even orange zest adds depth. The cornstarch is non-negotiable—it’s what gives that perfect set without gummy filling. Diamond Crystal baking powder is my go-to for reliable lift, but any brand works.

Prep the crust first—it needs 30 minutes to chill before rolling. Store leftover filling in an airtight container for 3 days in the fridge or 3 months frozen. The crust reheats beautifully—just 5 minutes at 350°F to crisp up. For make-ahead magic, assemble the pie and refrigerate overnight before baking—it bakes more evenly. Springform pan is ideal, but any 9-inch pie dish works. The aroma while baking? Worth every minute—trust me on this.

Step-by-step instructions for rhubarb pie recipe vegan

Here's how to create a perfectly balanced tart-sweet filling with a flaky crust that rivals traditional pies.

In a large mixing bowl, combine the 4 cups chopped fresh rhubarb with 1.5 cups granulated sugar and 0.25 cup cornstarch. The sugar should coat the rhubarb pieces completely—this prevents a watery filling. Add 2 tablespoons freshly squeezed lemon juice and 1 teaspoon vanilla extract, then stir gently until everything is evenly distributed.

Here's the thing—rhubarb needs acid to balance its tartness, and the cornstarch is crucial for thickening. If you're using maple syrup instead of sugar, reduce it slightly to 1 cup since it's sweeter. Let the mixture sit for 15 minutes while you prepare the crust, allowing the flavors to meld and the rhubarb to soften slightly.

In a separate bowl, whisk together 2.5 cups all-purpose flour, 0.5 teaspoon salt, 1 teaspoon baking powder, and 1 teaspoon ground cinnamon (if using). Add 1 cup solid coconut oil and cut it into the flour mixture with a pastry cutter or your fingers until it resembles coarse crumbs with pea-sized oil pieces.

Now for the flax eggs: In a small bowl, mix 0.25 cup flaxseed meal with 0.5 cup ice water and let it sit for 5 minutes to thicken. Pour this into the flour mixture and stir until it just comes together. If the dough feels too dry, add 1 tablespoon ice water at a time until it holds when pressed. The dough should be cool to the touch—warmth will make it tough.

Preheat your oven to 375°F. On a lightly floured surface, roll out about 2/3 of the dough to fit a 9-inch pie dish, leaving a 1-inch overhang. Transfer to the dish and press gently into the bottom and up the sides. Trim the excess dough, leaving a clean edge.

Pour the rhubarb filling into the crust, mounding it slightly in the center. Roll out the remaining dough, place it over the filling, and crimp the edges together using your fingers or a fork. Cut a few slits in the top crust to allow steam to escape—this prevents a soggy pie. Bake for 50-55 minutes until the crust is deep golden brown and the filling bubbles through the slits.

Remove the pie from the oven and let it cool on a wire rack for at least 2 hours—this resting time allows the filling to set properly. The crust will firm up as it cools, and the filling will thicken to a perfect consistency. If you're impatient (I know the smell will be torture), cool for 1 hour before slicing, but wait at least 30 minutes before serving.

Slice into 6 generous wedges and serve warm with a dollop of coconut whipped cream or vanilla ice cream. The crust should be flaky and crisp, while the filling balances tart rhubarb with just enough sweetness. For extra flair, dust with powdered sugar or a sprinkle of cinnamon before serving—trust me, it makes all the difference!

Storing and reheating this recipe

Fridge Storage Tips

Once your vegan rhubarb pie has cooled completely, store it in an airtight container with parchment paper between slices to prevent sticking. The crust stays crisp for up to 4 days in the fridge, while the filling maintains its perfect set. I like using glass pie dishes with lids because they preserve the aroma—just

Freezer-Friendly Method

For long-term storage, wrap the entire pie tightly in plastic wrap followed by foil to prevent freezer burn. Label it with the date and freeze for up to 3 months. When ready to enjoy, thaw overnight in the fridge, then reheat at 350°F for 15-20 minutes to restore that golden crust. The filling might soften slightly, but it still tastes amazing.

Reheating Perfection

For individual slices, reheat in a 350°F oven for 8-10 minutes on a baking sheet with a splash of water in the pan to maintain moisture. Microwave reheating works too—cover with a damp paper towel and heat in 30-second intervals until warmed through.

The key is low and slow to avoid a soggy crust. Trust me, this method keeps everything flaky and delicious. 🔥

Make-Ahead Magic

Assemble the pie completely (unbaked) and refrigerate overnight for even better flavor development. The next day, bake as directed—this technique ensures the crust bakes evenly and the filling sets perfectly.

For busy days, prepare the crust ahead and freeze it wrapped in plastic for up to 1 month. Just thaw and assemble when ready to bake. 💫

Serving Leftovers

Leftovers taste just as good as day-old pie—slice and serve at room temperature for the best texture. For a quick breakfast or snack, pair with coconut yogurt and a sprinkle of toasted nuts.

The crust holds up beautifully when reheated, making this pie perfect for meal prep. Store slices in single-serving containers for grab-and-go convenience. ✨

Frequently asked questions