Easy Strawberry Rhubarb Crisp

When strawberry season crashes into rhubarb season, this crisp is the thing I make on autopilot. It’s tart, jammy, wildly fragrant, and has that crumbly, toasty top that makes you hover by the oven like a cartoon character sniffing pie steam. It’s the best kind of low-effort dessert: a little chopping, a little stirring, and you’re rewarded with bubbling, ruby fruit and a shattery, oat-kissed lid that begs for a scoop of vanilla.
This is my husband’s “can we have it for dinner?” dessert. He’ll pretend to “check if it’s setting” and somehow remove a corner with a spoon the size of a shovel. The kids call it crumble because it crumbles (honest branding), and we’ve basically made it our spring ritual. First picnic? Crisp. Rainy baseball game? Crisp. That week I bought three bunches of rhubarb because I forgot I already panic-bought two? You guessed it.
Why You’ll Love This Easy Strawberry Rhubarb Crisp
– That sweet-tart bite smacks you right in the nostalgia—like grandma’s pie without the pie stress.
– The topping is crunchy in all the right places and somehow stays crisp even when you sneak leftovers straight from the fridge at 10 p.m.
– Zero fussy steps, no mixer, no drama. You can make it with a toddler “helping.”
– Works with fresh or frozen fruit, so you’re not held hostage by the farmers market.
– It’s the dessert that doubles as breakfast. I don’t make the rules.
This Easy Strawberry Rhubarb Crisp is such a comforting and straightforward dessert. The balance of tart rhubarb and sweet strawberries with the buttery oat topping made it a hit in my kitchen. It’s quick to put together and tastes even better warm with a scoop of vanilla ice cream!
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Kitchen Talk
Sometimes I add a tiny splash of vanilla and it makes the strawberries taste like, well, more strawberries. Also, I once tried to “healthify” the topping with too many nuts and it turned into granola armor—delicious, but you needed a pickaxe. A little is perfect; a lot is… crunchy chaos.
If your rhubarb is super tart, don’t be a hero—sweeten the fruit a touch more or add a squeeze of orange juice. And yes, I’ve used frozen fruit straight from the bag when I was in a rush; it bakes up beautifully, just give it a few extra minutes until the middle is actually bubbling. The topping likes cold butter. Warm, melty butter makes it sandy instead of clumpy. Learned that the messy way.
Shopping Tips
– Produce/Fruit: Look for firm, crisp rhubarb stalks with vibrant red or pink tones and fresh, sweet-smelling strawberries. No wilt, no mush.
– Baking Basics (Flour/Sugar/Leaveners): All-purpose flour and brown sugar are your MVPs. Light or dark brown both work—dark adds more molasses oomph.
– Sweeteners: If you prefer less refined, coconut sugar or maple syrup are solid. Taste your fruit; adjust sweetness to match tart rhubarb.
– Fats & Oils: Cold, unsalted butter gives the best clumps. Dairy-free? Use plant butter or refined coconut oil for a clean flavor.
– Citrus: A little lemon zest/juice brightens everything. Bottled lemon is fine in a pinch; fresh is better.
– Spices: Cinnamon is classic; a pinch of cardamom or ginger makes it feel fancy with zero extra effort.
Prep Ahead Ideas
– Chop rhubarb and hull strawberries the day before; toss with a little sugar and citrus, then refrigerate in a covered bowl.
– Mix the dry topping ingredients and stash in an airtight container. Cube your butter and keep it chilled (or freeze it).
– Morning-of: assemble the fruit in the baking dish, keep the topping separate. Evening-of: scatter topping and bake.
– Make-and-freeze option: assemble unbaked crisp, wrap tightly, and freeze. Bake from frozen and add extra time until it bubbles in the center.
Time-Saving Tricks
– Use frozen pre-sliced rhubarb and frozen strawberries—no chopping, no tears. Bake a bit longer.
– Pulse the topping in a food processor for quick, buttery crumbs. Don’t overdo it; you want pebbly, not sandy.
– Keep a “crisp mix” prepped in a jar in your pantry. Add butter and fruit when the craving hits.
– Don’t rush the rest time after baking. Ten-ish minutes lets the juices thicken so you get saucy, not soupy.
Common Mistakes
– Skipping the thickener in the fruit and ending up with strawberry soup. If it’s watery, stir in a little cornstarch slurry and return to the oven until bubbling.
– Pulling it when the edges bubble but the center is still quiet. Wait for the middle to visibly bubble—non-negotiable.
– Warm butter in the topping = sandy, not clumpy. If it starts melting, pop the bowl in the fridge for five.
– Using rhubarb leaves. Hard no—they’re toxic. Only the stalks are edible.
– Overcrowding with too many nuts or oats so the topping never crisps. Keep it balanced.
What to Serve It With
– Vanilla ice cream (classic for a reason).
– Lightly sweetened whipped cream with a whisper of lemon zest.
– Thick Greek yogurt for brunch vibes.
– A salty, crunchy thing on the side—pretzels or salted almonds—because contrast is fun.
Tips & Mistakes
– Hot oven and middle rack = best browning.
– If the top darkens too fast, tent with foil and keep baking until the center bubbles.
– Pan size matters: a wider dish gives more crunchy surface area; a deeper one gives a juicier interior.
– Taste your fruit. If it’s super tart, add a bit more sugar or lemon’s zest instead of more juice.
Storage Tips
Pop leftovers in the fridge, loosely covered, for up to 4 days. It reheats like a champ at 350°F until warm and crisp again, or in the air fryer for a speedy re-crisp. Cold-from-the-fridge spoonfuls are elite, especially for breakfast with yogurt. You can freeze baked crisp in snug containers for about 2 months—thaw overnight and warm to revive the topping.
Variations and Substitutions
– Gluten-free: Use certified GF oats and swap flour for almond flour or a 1:1 GF blend.
– Dairy-free/vegan: Plant butter or refined coconut oil works. A splash of vanilla helps with flavor.
– Fruit swaps: Mix in raspberries or blueberries; or do half apple for extra body in off-season.
– Spice play: Cinnamon + cardamom is cozy; ginger adds sparkle; orange zest instead of lemon for a creamsicle moment.
– Sweeteners: Maple syrup brings warmth; honey is lovely but can brown faster—watch the top.
– Nutty crunch: Almonds or pecans in the topping are great—just don’t overload or it won’t crisp right.
Frequently Asked Questions

Easy Strawberry Rhubarb Crisp
Ingredients
Main Ingredients
- 4 cup rhubarb, sliced 0.5-inch thick
- 3 cup strawberries, hulled and halved
- 0.5 cup granulated sugar for filling
- 2 tablespoon cornstarch
- 1 tablespoon lemon juice
- 1 teaspoon vanilla extract
- 0.25 teaspoon kosher salt for filling
- 1 cup old-fashioned rolled oats
- 0.75 cup all-purpose flour
- 0.5 cup brown sugar packed
- 1 teaspoon ground cinnamon
- 0.25 teaspoon kosher salt for topping
- 0.5 cup unsalted butter, cold and cubed
- 0.5 cup pecans, chopped optional
Instructions
Preparation Steps
- Preheat oven to 350°F. Lightly butter or spray a 9-by-9-inch baking dish (or a 2-quart casserole).
- Make the filling: In a large bowl, toss rhubarb, strawberries, granulated sugar, cornstarch, lemon juice, vanilla, and a pinch of salt until the fruit is evenly coated. Spread into the prepared dish.
- Make the topping: In another bowl, combine oats, flour, brown sugar, cinnamon, and salt. Cut in the cold butter with a pastry cutter or fingers until clumps form and no dry spots remain. Stir in pecans, if using.
- Crumble the topping evenly over the fruit, squeezing some pieces into larger clumps for extra crunch.
- Bake until the topping is golden and the filling is bubbling around the edges, 40 to 45 minutes. If the top browns too quickly, tent loosely with foil during the last 10 minutes.
- Cool for 15 minutes to thicken the juices. Serve warm, optionally with vanilla ice cream or whipped cream.
Notes
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