Desserts
Grandma's strawberry rhubarb pie recipe delivers that perfect tart-sweet balance we all crave, with a lattice crust that turns every slice into a showstopper. 🌟 The secret lies in the precise ratio of sugar to rhubarb—just enough to tame the tartness while keeping that bright, summery flavor.
I remember the first time I tasted my grandmother's version, and it became my mission to recreate that exact texture and taste.
This recipe combines traditional techniques with modern shortcuts: you can use either homemade pie dough or a high-quality store-bought crust to save time without sacrificing quality.
The filling requires careful prep—chopping the rhubarb into even pieces and removing those tough seeds—before simmering it with strawberries until it reaches that ideal thick consistency. Every step ensures the filling stays just thick enough to hold its shape when sliced.
What you'll end up with is a pie that's visually stunning with its classic lattice pattern and golden crust, while the filling delivers that signature balance of tart rhubarb and sweet strawberries in every bite.
The aroma alone as it bakes will have everyone gathering in the kitchen, and the first slice will be worth every minute of effort. This is the kind of pie that becomes a family tradition.
The best part? This recipe scales beautifully for gatherings or keeps well for days in the fridge, making it perfect for summer potlucks or holiday desserts. Once you master this technique, you'll never buy store-bought again. Let's get baking!
Ingredients for grandma's strawberry rhubarb pie
Grandma's secret: tart rhubarb, sweet strawberries, and a lattice crust that's crisp yet tender.
| Ingredient | Amount | Notes |
|---|---|---|
| Fresh Rhubarb Stalks 🍓 | 3 lb | Trimmed, cut into 1-inch pieces |
| Fresh Strawberries 🍓 | 2 lb | Hull removed, quartered |
| Granulated Sugar 🍚 | 1 ½ cups | White or raw turbinado |
| All-Purpose Flour 🌾 | 2 cups | For pie crust |
| Unsalted Butter 🧈 | 1 cup | Cold, cubed for crust |
| Ice Water 💧 | 6-8 tbsp | For dough binding |
| Lemon Juice 🍋 | 2 tbsp | Freshly squeezed |
| Cornstarch 🌾 | 2 tbsp | For thickening filling |
| Vanilla Extract 🥛 | 1 tsp | Pure vanilla for flavor |
| Salt 🧂 | ½ tsp | Fine sea salt |
| Cream of Tartar 🧂 | ½ tsp | For crust stability |
| Large Egg 🥚 | 1 whole | For egg wash |
The rhubarb and strawberries are the stars here—farmers markets have the juiciest stalks, but grocery store rhubarb works too if it's bright red and firm. Strawberries should be ripe but not mushy—organic from Trader Joe's or Costco are my go-tos. The sugar ratio is key: too little and it's overwhelmingly tart; too much and you lose that bright summer flavor. I like to use a mix of white sugar and a little turbinado for that classic pie crust crunch. For the crust, King Arthur flour gives the best texture, but any all-purpose will do. The cold butter is non-negotiable—it creates those flaky layers that make every bite worth it.
No rhubarb? Substitute with more strawberries plus 1 tbsp lemon juice to keep the tartness. Short on strawberries? Blueberries or raspberries work in a pinch, but the flavor will be different. The cornstarch is essential for that perfect thick filling—don't skip it. No vanilla extract? A pinch of cinnamon or almond extract adds depth. For the crust, if you don't have cream of tartar, add an extra 0.25 tsp of salt. And trust me, the egg wash (just 1 egg beaten with a splash of water) makes that crust golden and irresistible.
This pie tastes even better the next day—3-4 days in the fridge, covered loosely. For lattice crusts, I always cut the dough strips first, then stack them on top. They'll crisp up beautifully in the oven. Want to prep ahead? Make the filling and crust separately, then assemble right before baking. The aroma alone as it bakes will have everyone in the kitchen. Serve with vanilla ice cream for the ultimate combo.
Why You'll Love This Recipe
- No Fuss Filling: I swear by this trick—just chop the rhubarb and strawberries into even chunks, toss them with sugar, and let them sit while you roll the crust. That 10-minute wait does all the work, turning tart and sweet into a melty, jammy center that’s ridiculously easy to assemble.
- Tart-Sweet Magic: The rhubarb’s sharp bite softens just enough to let the strawberries shine, while the buttery crust adds that golden crunch. Honestly, the first bite always makes me pause—like summer in a slice, but better because it’s mine.
- Picnic to Potluck: This pie travels like a dream—cool in a basket, warm from the oven, or even reheated for breakfast the next day. I’ve taken it to brunch, packed it for hikes, and served it at 4th of July gatherings. The crust holds up, the filling stays intact, and everyone asks for seconds.
- Waste Not, Want Not: Between us, this recipe stretches farther than you’d think. Use up those overripe strawberries or the last of the rhubarb before it goes limp. And leftovers? I freeze slices in a bag—just reheat with a drizzle of cream, and it’s like dessert again. Budget-friendly and delicious? Yes, please.
Step-by-step instructions for Grandma's strawberry rhubarb pie
Here's how to create that legendary tart-sweet balance with a golden, flaky lattice crust!
👨🍳 Step 1: Prepare the Filling for Maximum Flavor
In a large bowl, combine the 3 lb fresh rhubarb stalks (cut into 1-inch pieces) and 2 lb fresh strawberries (hulled and quartered). Sprinkle with 1.5 cups granulated sugar and 2 tbsp lemon juice. Toss gently to coat the fruit evenly—this ensures every bite gets that perfect tart-sweet harmony.
Add 2 tbsp cornstarch and 1 tsp vanilla extract to the bowl. Mix lightly until just combined—overmixing releases juices too early. Let the mixture sit for 15 minutes while you prepare the crust. This resting time lets the fruit soften slightly and the sugar begin dissolving, creating a more cohesive filling.
🍳 Step 2: Make the Perfect Pie Crust
In a large bowl, whisk together the 2 cups all-purpose flour, 0.5 tsp salt, and 0.5 tsp cream of tartar. Cut in the 1 cup unsalted butter (cold and cubed) using a pastry cutter or your fingers until the mixture resembles coarse crumbs with pea-sized butter pieces. This texture is crucial for flaky layers.
Gradually add 6-8 tbsp ice water, 1 tablespoon at a time, mixing just until the dough comes together. Don't overwork it—handle only enough to form a smooth ball. Divide the dough into two equal discs, wrap each in plastic, and chill for at least 1 hour (or up to 2 days). The cold dough prevents shrinking and makes rolling easier.
🥘 Step 3: Assemble the Pie with Precision
Preheat your oven to 375°F. On a floured surface, roll out one dough disc into a 12-inch circle about ⅛-inch thick. Transfer it to a 9-inch pie dish, gently pressing it into the bottom and up the sides. Trim any excess dough, leaving about ½-inch overhang. Chill the crust while you prepare the lattice.
For the lattice, cut the second dough disc into 12 strips about ½-inch wide. Arrange 6 strips horizontally across the pie, leaving ½-inch gaps between each. Fold back every other strip, then weave the remaining strips through the gaps. Unfold and press gently to seal. Crimp the edges by pinching with your fingers or using a fork.
🍳 Step 4: Fill and Bake to Golden Perfection
Pour the prepared fruit filling into the crust, mounding it slightly in the center. Brush the lattice and crust edges with the 1 whole large egg beaten with 1 tbsp water for a beautiful golden finish. Sprinkle any remaining sugar from the filling over the top—this caramelizes beautifully during baking.
Bake for 50-55 minutes until the crust is deep golden brown and the filling is bubbling vigorously. The edges should be set but the center should still have a slight jiggle. If the lattice browns too quickly, tent with foil after 30 minutes to prevent burning.
⏰ Step 5: Cool and Serve for Maximum Enjoyment
Remove the pie from the oven and let it cool on a wire rack for 2 hours. This gradual cooling prevents the filling from turning to mush. The pie will look perfect with its golden lattice and glossy egg wash, but patience is key—rushing this step ruins all your hard work.
Slice into 8 generous wedges and serve warm or at room temperature. The filling should be thick but still juicy, with a perfect balance of tart rhubarb and sweet strawberries. Each bite should deliver that classic Grandma-style combination—tart enough to make your mouth pucker, then sweet enough to make you smile. Enjoy with a scoop of vanilla ice cream for the ultimate experience!
Pro Tips For Making Grandma'S Strawberry Rhubarb Pie
- CHOP RHUBARB UNIFORMLY: I learned this the hard way—uneven pieces turn mushy in some spots while staying crunchy in others. Cut the stalks into ½-inch chunks before washing them (they’ll be easier to handle), and trim off the leafy ends—those are bitter and tough.
- STRAWBERRY SKINS ON: Peeling strawberries is a hassle that doesn’t pay off. Leave the skins on for texture and a subtle earthiness, but hull them (remove the green tops) for cleaner bites. If you’re using large berries, cut them in half—no one wants a jammy, unbalanced mouthful.
- DON’T OVERMIX THE FILLING: Stir the rhubarb-strawberry mix just until sugar dissolves. Overmixing releases pectin and turns the filling into glue. A few lumps? That’s normal—it’ll soften as it bakes. (Yes, even if you’re impatient like me.)
- BLIND-BAKE THE CRUST: Skip the egg wash if you’re nervous about soggy bottoms. Blind-bake the crust for 10 minutes with pie weights or dried beans before adding filling—it guarantees a crisp shell. (Your future self will thank you when the pie doesn’t leak like a sieve.)
Creative variations of this recipe
Springtime Citrus Twist
Brighten up the classic recipe by adding 1 tbsp orange zest and 2 tbsp fresh orange juice to the filling. The citrus cuts through the tartness of the rhubarb while adding a refreshing springtime note.
I like to use Navel oranges for their sweetness and low bitterness. Add the zest and juice along with the lemon juice and sugar—it enhances the strawberries' natural flavors too. 🌸
Spiced Rum Infusion
For a boozy twist perfect for adult gatherings, stir 1 oz dark rum (like Kahlúa or Appleton Estate) into the filling along with the vanilla extract. The rum caramelizes beautifully during baking, adding depth without overpowering the fruit.
I recommend using a good-quality rum—it makes a noticeable difference. This variation works especially well with a double crust instead of lattice. 🍹
Cream Cheese Swirl
Take this pie to the next level by adding a creamy element. After pouring the fruit filling into the crust, drop 4 oz softened cream cheese in dollops across the top, then gently swirl it with a knife.
The cream cheese melts into the filling, creating pockets of rich, tangy creaminess that balance the tartness. I use Philadelphia cream cheese for its smooth texture. 🥛
Nutty Crust Variation
For a textural upgrade, replace ½ cup of the flour in your crust recipe with ½ cup chopped pecans or walnuts. Pulse them briefly in a food processor to create fine pieces, then mix into the dry ingredients.
The nuts add a delightful crunch that contrasts beautifully with the soft filling. I recommend pecans for their buttery flavor. 🌰
Winter Spiced Version
Transform this into a cozy winter dessert by adding 1 tsp cinnamon, ½ tsp ground ginger, and ¼ tsp nutmeg to the filling. These warm spices complement the tartness beautifully and evoke holiday comfort.
Pair with a sprinkle of coarsely chopped candied ginger on top before baking for extra festive flair. 🎄
No-Bake Option
For a quick summer shortcut, skip the lattice and use a pre-made graham cracker crust (like Nabisco or Keebler). Prepare the filling as directed, then spoon it into the crust. Top with whipped cream and fresh berries for a no-bake dessert that still delivers that signature tart-sweet balance.
This version takes just 15 minutes to assemble and requires no oven time. 🍓
Nutrition facts
Frequently asked questions
Why does my rhubarb pie filling turn watery?
The most common cause is undercooking or using too much liquid fruit. Always simmer the filling until it thickens to a jam-like consistency (about 15-20 minutes on the stove). If you're short on time, add an extra 1 tbsp cornstarch to the filling mixture. Also ensure your rhubarb is properly chopped—smaller pieces release juices faster.
Can I use frozen strawberries and rhubarb?
Yes, but with adjustments! First, thaw the fruit completely and drain excess liquid. For rhubarb, chop it into ½-inch pieces (smaller than fresh) since frozen versions are often softer. You may need to add 1 extra tbsp cornstarch to compensate for the extra moisture. The flavor will be slightly less vibrant, but still delicious.
How do I make the lattice crust look perfect?
Start with chilled dough strips—this prevents them from sticking. Use a ruler to ensure even ½-inch gaps between strips. Brush the lattice with egg wash after weaving (not before) to keep it crisp. For extra stability, press each strip firmly against the pie's edge before weaving. If the lattice collapses during baking, it was likely too warm or the filling wasn't thick enough.
What's the best way to store leftovers?
Store at room temperature for up to 2 days in an airtight container, but refrigerate for longer storage (up to 5 days). For freezing, slice the pie first, then wrap each piece tightly in plastic wrap and foil. Thaw overnight in the fridge—never at room temperature. The texture holds up well, though the crust may lose some crispness after freezing.
Can I make this pie ahead of time?
Assemble the pie (unbaked) up to 24 hours ahead and refrigerate. Bake when ready—just add 5-10 extra minutes to the baking time. For the filling, you can prep it a day ahead and store it covered in the fridge. The flavors actually improve after sitting overnight as the sugars caramelize slightly.