Juicy Rhubarb Crisp with Strawberry Jello

Rhubarb and strawberry make such a lovely sweet-and-tart combo, and this cozy rhubarb crisp with strawberry gelatin gives a charming, summery spin on the classic fruit crisp. Think tender, bright rhubarb tossed in strawberry jello for a burst of flavor, topped with a crunchy oat-pecan crumb that bakes up golden and irresistible.

This recipe is easy as pie and uses simple pantry staples: you’ll chop and toss the rhubarb, give it a quick bake, then mix up a straightforward oatmeal crumb topping (gluten-free flour and oats are featured here, but all-purpose flour works just fine too). After that, pop everything back in the oven until the filling is bubbling and sparkly like jewels. Bonus — it’s perfect for making ahead, freezing, or swapping ingredients like frozen rhubarb, different jello flavors, or nuts.

Serve it warm with a scoop of vanilla ice cream, fluffy whipped cream, or even a spoonful of tangy Greek yogurt to brighten things up. Keep reading for detailed ingredients, clear step-by-step instructions, and tips to dodge common baking pitfalls so your crisp turns out beautifully every single time.

Why This Crisp Works

• Gluten-free friendly – This dessert uses gluten-free flour and oats, so everyone at your table can dig in without worry.
• The perfect flavor balance – Tart rhubarb meets sweet strawberry jello, all topped with a crisp oat and pecan crumble that adds the perfect crunchy contrast.
• Make-ahead magic – Prep your crisp parts ahead of time and bake right before serving, which is a lifesaver on busy days or when guests pop by.
• Simple pantry ingredients – Most of this comes straight from your kitchen staples, and you can easily swap in coconut oil for butter depending on what you have on hand.

This crisp hits the sweet spot: impressive but not complicated — perfect for weekday treats, brunch with friends, or laid-back summer dessert. Here’s why you’ll find yourself making it again and again:

• Bright, nostalgic vibes: Tangy rhubarb and sweet strawberry gelatin join forces to create a stunning, jewel-toned filling that tastes like summer wrapped in every bite.
• Awesome texture combo: Soft, saucy rhubarb fills the bottom, topped with a buttery oat-pecan crumble that’s satisfyingly crisp — you get the best of both worlds in every forkful.
• Pantry-friendly all the way: Most ingredients are everyday favorites (think sugar, oats, flour, nuts, oil or butter, plus a box of strawberry jello), so you can whip this up without a last-minute trip to the store.
• Flexible & forgiving: Feel free to switch things up — frozen rhubarb works great, try different gelatin flavors or thicken fresh berries with cornstarch instead. Nuts? Swap in your favorites or go nut-free with extra oats. Flour? Regular or gluten-free both work perfectly.
• Make-ahead & freezer friendly: Make the filling or the whole dish in advance, or freeze after baking and reheat later for an almost fresh-baked feel.
• Always a crowd-pleaser: Serve it warm with vanilla ice cream, whipped cream, or Greek yogurt and watch it disappear fast at family dinners, potlucks, or weekend gatherings.

Bottom line: it’s simple, endlessly adaptable, and reassuringly comforting. It’s an easy way to turn fresh seasonal rhubarb into a dessert that everyone will be asking for again — and if you love baking with rhubarb, you might also enjoy our Rhubarb Greek Yogurt Muffins recipe.

Filling and Topping Ingredients

• 4 cups chopped rhubarb
• 3 oz strawberry gelatin (like Jell-O brand)
• 2 tsp vanilla extract
• 1 cup granulated sugar
• 1 cup pecans (chopped)
• 2/3 cup rolled oats (old fashioned oats work best for texture)
• 6 tbsp melted coconut oil (or chilled butter if you prefer a richer topping)
• 1/4 tsp salt
• 1/2 cup packed brown sugar
• 2/3 cup gluten-free flour (I love using Bob’s Red Mill 1-to-1 blend)

Assemble and Bake the Crisp

1. Trim rhubarb leaves and tough ends; chop stalks into pieces about 1/4 inch (if using frozen rhubarb, thaw and drain well).
2. Preheat oven to 375°F.
3. In a large bowl, toss chopped rhubarb with granulated sugar, strawberry gelatin, and vanilla until well coated.

4. Spray a 9×9-inch deep baking dish with cooking spray or line it with parchment paper.

   

5. Pour the rhubarb mixture into the prepared dish and spread it out evenly.
6. Bake the rhubarb filling for 20 minutes.
7. While the rhubarb bakes, combine gluten-free flour, rolled oats, brown sugar, salt, chopped pecans, and melted coconut oil in a bowl; stir until the mixture forms coarse crumbs (if using chilled butter, cut it in with a pastry cutter or your fingertips until crumbly).

8. Remove the dish from the oven and spread the oat-pecan crumb topping evenly over the rhubarb.

   

9. Return the dish to the oven and bake another 30 minutes, or until the topping is golden brown and the filling is bubbling.

10. Let the crisp cool for about 10 minutes to set before serving.

Tips for Perfect Texture

The biggest trick to a perfect rhubarb crisp is cutting your rhubarb small—aim for pieces less than 1/4 inch so they cook evenly and soften nicely without getting stringy or tough. When mixing your crumb topping, be gentle; don’t overwork it after adding your coconut oil or butter. Overmixing can make your topping dense instead of the light, crumbly texture you want. Also, take a moment to spread your topping evenly across the rhubarb. If it’s too thick in some spots and too thin in others, your crisp won’t bake evenly and you’ll miss out on that perfect crisp-to-fruit balance in every bite. Lastly, give your crisp a good 15-20 minutes to set after baking—that helps the gelatin firm up so your filling isn’t runny when you serve.

This sweet and tangy rhubarb crisp just begs for a scoop of creamy vanilla ice cream—the hot-and-cold combo is a total winner if you’re serving a crowd. Not into ice cream? A spoonful of freshly whipped cream or a dollop of Greek yogurt also adds a nice creamy contrast to the crunchy topping. For brunch, I love pairing this crisp with a hot cup of coffee or tea to balance the sweetness. Feeling fancy? Drizzle with caramel sauce or sprinkle a few extra chopped pecans on top to dress it up a bit.

Simple Variations and Mix-Ins

This warm, homey dessert is flexible enough for several ingredient swaps, so never worry if you’re missing something:

• Rhubarb: No fresh rhubarb? Frozen works perfectly—just thaw and drain it well before using. You can also try a mix of strawberries and rhubarb or use all strawberries if you prefer.
• Strawberry gelatin: Swap for raspberry or cherry gelatin to change up the flavor. Want to keep it natural? Skip the gelatin and add 2 cups of fresh strawberries along with 2 tablespoons of cornstarch to thicken your filling.
• Gluten-free flour: Regular all-purpose flour works well if gluten isn’t a concern. Almond flour is an option too, but your topping will be a bit more crumbly.
• Rolled oats: Quick oats can stand in, but old-fashioned rolled oats give the best texture. If gluten-free is your thing, make sure your oats are certified gluten-free.
• Pecans: Try walnuts, almonds, or a favorite nut mix instead. Need nut-free? Add extra oats or use sunflower seeds for crunch.
• Coconut oil/butter: Both work well. You can also use margarine, though butter adds the best flavor. When using coconut oil, be sure it’s melted but cooled so it doesn’t cook the topping before baking.

Store, Freeze, and Reheat

Keep it fresh: Store your rhubarb crisp in the fridge for up to 5 days in an airtight container or tightly covered with plastic wrap. The topping might lose some crunch over time, but the flavors deepen and get even better after a day or so.

Freezing: This crisp freezes like a champ for up to 3 months! Let it cool completely, wrap well in plastic wrap and foil, and freeze. I recommend baking it in a disposable aluminum pan for easy freezer-to-oven transitions.

Reheating: Warm up refrigerated crisp in a 350°F oven for about 15 minutes to bring the topping back to crispy perfection. If frozen, thaw overnight in the fridge before reheating. You can microwave single servings if you’re in a hurry, but the topping won’t stay crisp.

Preparation Time 15-20 minutes Cooking Time 50-60 minutes Total Time 65-80 minutes Level of Difficulty Medium

Common Questions Answered

For the best crisp, look for rhubarb stalks that are firm and bright pink to red. Color isn’t always a sign of sweetness or ripeness, but fresh spring rhubarb usually tends to be more tender and less stringy—perfect for desserts like this. If you can only get frozen rhubarb, no worries! Just thaw it completely and drain any extra liquid. When prepping, make sure to remove all the leaves—they’re toxic—and trim off any tough ends before chopping your rhubarb into small pieces. That way, every bite is tender and tasty.