As I was slicing fresh rhubarb from my garden, the tangy aroma instantly took me back to sun-soaked summer afternoons spent enjoying homemade pies. Today, I’m excited to share my Mixed Berry Rhubarb Pie, a delightful blend of strawberries, blackberries, blueberries, and raspberries, perfectly balanced with the tartness of rhubarb. This recipe not only embraces the vibrant flavors of the season but is also gluten-free and dairy-free, making it accessible for everyone at the table. With its crunchy crumble topping and simple preparation, this pie is a fantastic crowd-pleaser for any gathering. So, why not elevate your dessert game and make some cherished memories around the dinner table with this irresistible pie? What’s your favorite summertime dessert that brings everyone together?

Why is Mixed Berry Rhubarb Pie So Special?
Flavor Explosion: This pie brilliantly combines sweet and tart flavors, creating an irresistible burst of berry goodness with a zesty rhubarb balance.
Versatile Toppings: Choose between a classic pie crust or a crunchy crumble topping to suit your preference. Both options promise delightful textures!
Diet-Friendly: Perfect for various dietary needs, the gluten-free and dairy-free profiles ensure everyone can indulge without worry.
Effortless Preparation: With minimal steps, this recipe is beginner-friendly—ideal for those who want homemade quality with hassle-free methods.
Summer Staple: Perfect for barbecues or garden gatherings, this pie is guaranteed to impress your friends and family, just like the Cranberry Jalapeno Cream Cheese Dip pairs beautifully with any meal.
Make Ahead: The filling can be prepared the day before, making it easy to whip up this showstopper when you’re ready to serve!
Mixed Berry Rhubarb Pie Ingredients
For the Pie Crust
• Pie Crust for Deep 9” Pie – Use a gluten-free option for a suitable base if necessary.
For the Filling
• Rhubarb (2 cups, thinly sliced) – Adds a tangy kick that balances the sweetness of the berries.
• Raspberries (1 cup) – Brings vibrant color and a delightful flavor to the mix.
• Blackberries (1 cup) – Adds a rich sweetness that deepens the overall taste.
• Blueberries (1 cup) – Offers juicy bursts of sweet flavor throughout the pie.
• Strawberries (1 ½ cups, sliced) – Contributes sweetness and texture to the filling.
• Orange Zest (1 orange) – Enhances the filling’s flavor profile with bright citrus notes.
• Cornstarch (4 tbsp) – Helps thicken the fruit filling for a perfect consistency.
• Sugar (1 cup) – Sweetens the filling to amplify the natural fruit flavors, essential for the Mixed Berry Rhubarb Pie.
For the Crumble Topping
• Butter (8 tbsp, dairy-free recommended) – Provides richness; ensure it’s cold for a flaky texture.
• Rolled Oats (1 ¼ cup) – Forms a hearty base for the crunchy crumble.
• Brown Sugar (⅓ cup, packed) – Adds a delicious caramel note to the topping.
• Kosher Salt (½ tsp) – Balances the sweetness in both the filling and the crumble.
• Gluten-Free 1:1 Flour (¾ cup) or All-Purpose Flour – Binds the crumble topping together, creating a delightful crunch.
Step‑by‑Step Instructions for Mixed Berry Rhubarb Pie
Step 1: Preheat the Oven
Begin by preheating your oven to 400°F (200°C), ensuring it reaches the right temperature for a perfectly baked pie. Place a baking sheet on the bottom rack to catch drips, and another on the center rack. This will help create a crisp crust while preventing messes in the oven.
Step 2: Prepare the Filling
In a large mixing bowl, combine the thinly sliced rhubarb, raspberries, blackberries, blueberries, and strawberries. Add the orange zest, sugar, and cornstarch, mixing until the fruits are evenly coated. This mixture will create a beautifully vibrant filling for your Mixed Berry Rhubarb Pie, bursting with flavor.
Step 3: Assemble the Pie
Prepare your pie crust in a deep 9” pie dish, ensuring it is evenly pressed along the bottom and sides. Spoon the berry mixture into the crust, spreading it evenly to create a luscious layer. The colorful filling should fill the crust generously, creating the perfect foundation for the crumble topping.
Step 4: Make the Crumble Topping
In a separate bowl, mix cold dairy-free butter, rolled oats, brown sugar, gluten-free flour, and kosher salt. Use your fingers or a pastry cutter to combine until the mixture is crumbly and resembles coarse sand. This easy crumble topping will add a delightful crunch to your Mixed Berry Rhubarb Pie.
Step 5: Sprinkle and Bake
Sprinkle the crumble topping evenly over the berry filling in the pie. Place your pie in the preheated oven and bake for 45 minutes. Check it at the 25–30 minute mark; if the topping is browning too quickly, tent it with aluminum foil to prevent over-baking.
Step 6: Cool and Set
Once the pie is golden and bubbling, remove it from the oven and allow it to cool for at least one hour. This cooling step is essential for letting the filling set properly, enhancing the flavor and texture. The pie should become slightly thicker as it cools, making it easier to slice.
Step 7: Refrigerate and Serve
After cooling, refrigerate the Mixed Berry Rhubarb Pie for about 8 hours or overnight. Serving it cold allows the flavors to meld beautifully. Serve slices with a scoop of dairy-free vanilla ice cream or a dollop of whipped coconut cream for a refreshing treat that complements this delightful dessert.

Expert Tips for Mixed Berry Rhubarb Pie
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Use Cold Butter: Ensure your butter is nice and cold for the crumble topping. This helps achieve that flaky, restaurant-quality texture we all love.
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Check for Browning: Keep an eye on your pie while it’s baking. If the crumble topping starts to brown too quickly, tent it with foil to prevent burning.
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Chill Before Serving: Don’t skip the refrigeration step! Allowing the pie to chill for at least 8 hours enhances the flavors and firm up the filling beautifully.
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Berry Substitutions: Feel free to mix and match berries. Seasonal fruits like peaches or cherries can also add a delightful twist to your Mixed Berry Rhubarb Pie.
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Avoid Soggy Crust: To prevent a soggy bottom, ensure the filling is mixed well with cornstarch, which thickens the liquid from the fruits as they bake.
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Measure Accurately: For the best results, measure your ingredients accurately, especially the sugar and cornstarch, to achieve the perfect sweetness and consistency.
Make Ahead Options
These Mixed Berry Rhubarb Pie components are perfect for busy cooks looking to save time! You can prepare the filling up to 24 hours in advance by mixing the rhubarb and berries with the sugar and cornstarch, then refrigerate it in an airtight container. This allows the flavors to blend beautifully. Additionally, you can make the crumble topping a day before and store it in the fridge, keeping it crumbly and fresh. When you’re ready to serve, simply assemble the pie by placing the filling in the crust, topping it with the crumble, and baking it as instructed. This way, you’ll enjoy a delicious dessert with minimal last-minute effort!
What to Serve with Mixed Berry Rhubarb Pie
Elevate your dessert experience with delightful accompaniments that enhance sweetness and texture while refreshing the palate.
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Dairy-Free Vanilla Ice Cream: The smooth, creamy texture pairs beautifully with the pie’s crunchy crumble, creating a delightful contrast. It melts slightly on warm pie, adding a refreshing touch.
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Whipped Coconut Cream: Light and airy, this topping is a perfect match. Its subtle sweetness complements the tartness of the pie while providing luxurious creaminess, perfect for a summer treat.
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Fresh Mint Leaves: Sprinkling mint leaves adds a burst of freshness. Their cool notes balance the pie’s sweet-tart flavor, elevating each bite with a hint of herbaceous brightness.
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Sparkling Lemonade: The citrusy fizz of sparkling lemonade cleanses the palate after each slice. It adds a cheerful, refreshing element that pairs wonderfully with the fruity flavors of the pie.
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Fruit Salad: A colorful medley of seasonal fruits enhances the freshness of your dessert table. The juicy, natural sweetness can provide a light counterpoint to the rich flavor of the pie.
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Lemon Sorbet: This icy treat serves as an excellent palate cleanser. Its tartness echoes the rhubarb, while the frozen texture adds a fun, refreshing twist after each mouthful of pie.
Mixed Berry Rhubarb Pie Variations
Feel free to get creative and personalize your pie experience!
- Berry Swap: Replace any berry with those in season; peaches or cherries add a unique twist to the filling.
- Dairy-Free Cream: Use coconut cream instead of whipped cream for a tropical flavor that perfectly complements the pie.
- Nutty Crumble: Add crushed almonds or walnuts to the crumble for a delightful crunch and a nutty flavor that enhances the dessert.
- Citrus Zest: Include lemon or lime zest along with the orange for an extra layer of brightness in the filling.
- Oat-Free Crumble: Substitute the rolled oats with crushed gluten-free cookies for a sweeter, unique topping that kids will love!
- Spice It Up: A dash of cinnamon or nutmeg can elevate the flavor profile, giving your pie a cozy warmth.
- Chocolate Twist: Drizzle melted dairy-free chocolate over slices for a rich, indulgent treat that will impress your guests.
- Garnish Ideas: Top with fresh mint or edible flowers for a stunning presentation that’s perfect for summer gatherings.
For a lovely pairing, consider serving a slice of your Mixed Berry Rhubarb Pie with a scoop of Vanilla Raspberry Chia Pudding to create a delightful contrast of flavors.
How to Store and Freeze Mixed Berry Rhubarb Pie
Fridge: Store your Mixed Berry Rhubarb Pie in the refrigerator for up to 3 days, covered with plastic wrap or in an airtight container to maintain freshness.
Freezer: For longer storage, wrap the pie tightly in plastic wrap and then aluminum foil, and freeze for up to 3 months. Thaw in the refrigerator before serving.
Reheating: When ready to enjoy, reheat slices in a preheated oven at 350°F (175°C) for about 10-15 minutes until warm, ensuring the crumble stays crispy.
Serving Tip: Enjoy the pie chilled or warm, paired with a scoop of dairy-free ice cream or a dollop of whipped coconut cream for a perfect treat!

Mixed Berry Rhubarb Pie Recipe FAQs
What should I look for when selecting rhubarb?
When choosing rhubarb, look for firm stalks that are vibrant in color—preferably a mix of red and green. Avoid any that show dark spots or wrinkles, as they may be overripe or starting to spoil. The stalks should feel crisp when gently squeezed.
How should I store leftover Mixed Berry Rhubarb Pie?
Store your pie in the refrigerator for up to 3 days, covering it with plastic wrap or placing it in an airtight container. This will help keep it fresh and prevent it from drying out.
Can I freeze the Mixed Berry Rhubarb Pie?
Absolutely! To freeze, wrap the pie tightly in plastic wrap, then in aluminum foil to protect it from freezer burn. It will keep well for up to 3 months. When you’re ready to enjoy, thaw it overnight in the refrigerator, then reheat individual slices in a 350°F oven for about 10-15 minutes until warmed through.
What if my pie crust is soggy?
If your pie crust turns out soggy, prevent it next time by making sure the filling is properly thickened with cornstarch and avoid overfilling. Baking the crust blind (pre-baking it without filling) for 8-10 minutes can also help firm it up before adding the filling.
Is this pie safe for people with allergies?
This Mixed Berry Rhubarb Pie is gluten-free and dairy-free, making it a great option for those with certain dietary restrictions. However, always check ingredient brands for allergens and if you’re unsure, consult a doctor or nutritionist. If you’re making it for pets, ensure that berries, especially certain types, are pet-friendly as some fruits can be toxic to them.
What are some alternative ingredients for this recipe?
Feel free to substitute berries based on what’s in season or what you have on hand. For instance, you can use peaches, cherries, or even mixed tropical fruits for a different twist. Just remember to adjust the sugar depending on the sweetness of the fruit you choose!

Mixed Berry Rhubarb Pie for the Perfect Summer Treat
Ingredients
Equipment
Method
- Preheat oven to 400°F (200°C), place baking sheet on bottom rack.
- Combine rhubarb, raspberries, blackberries, blueberries, strawberries, orange zest, sugar, and cornstarch in a bowl.
- Prepare pie crust in deep 9” pie dish and fill with berry mixture.
- Mix cold dairy-free butter, rolled oats, brown sugar, gluten-free flour, and kosher salt until crumbly.
- Sprinkle crumble topping over the filling and bake for 45 minutes, check after 25-30 minutes.
- Allow pie to cool for at least one hour.
- Refrigerate for about 8 hours before serving.

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