Easy Rhubarb Crisp Recipe with Oat Topping
Easy Rhubarb Crisp is the ultimate dessert for rhubarb season. After making this many times, I’ve perfected the crispy oat topping that everyone loves. This crispy, golden dessert is better than takeout and perfect for a cozy night in. Jump to the recipe or keep reading for my best tips. If you love recipes like this, you’ll also enjoy Easy Grilled Shrimp and Avocado Bowl Recipe and Fruity Pebbles Cheesecake Tacos Easy No-Bake Dessert.
Why This Easy Rhubarb Crisp Recipe with Oat Topping Is Pure Comfort
- Crispy oat topping that's perfectly golden
- Tart and sweet rhubarb filling that's not too tart
- Easy to make with simple ingredients
- Perfect for rhubarb season and cozy nights in
What You'll Need for Easy Rhubarb Crisp Recipe with Oat Topping
Choosing the right ingredients makes a big difference, but this recipe is forgiving enough to work with what you have.
- Rhubarb
- Sugar
- Lemon juice
- All-purpose flour
- Old-fashioned oats
- Melted butter
- Vanilla extract
- Cinnamon
- Salt
- Optional: Whipped cream or vanilla ice cream
📝 Ingredient Notes
- Rhubarb: Use fresh rhubarb for the best flavor. Frozen can be used but may release more liquid.
🛒 Tools & Equipment I Recommend
- Food processor — Saves time and effort in chopping rhubarb → See on Amazon
- Parchment paper — Makes cleanup easy and prevents sticking → See on Amazon
How to Make Easy Rhubarb Crisp Recipe with Oat Topping
- Prepare rhubarb: Preheat oven to 375°F (190°C). Cut rhubarb into 1-inch pieces and place in a 9-inch pie dish. Sprinkle with 1 cup sugar and 1 tablespoon lemon juice. Toss to coat and let sit for 10 minutes.
- Make oat topping: In a medium bowl, combine 1 cup all-purpose flour, 1 cup old-fashioned oats, 1/2 cup brown sugar, 1/2 teaspoon cinnamon, and 1/4 teaspoon salt. Add 1/2 cup melted butter and mix until crumbly.
- Assemble and bake: Sprinkle oat topping evenly over rhubarb. Bake for 30-35 minutes, or until golden and bubbly.
- Serve: Let cool for 5 minutes, then serve with whipped cream or vanilla ice cream.
Cook's Tips for Perfect Easy Rhubarb Crisp Recipe with Oat Topping
- Common mistake and fix: Don't overmix the oat topping. It should be crumbly, not doughy.
- Tip: For a gluten-free version, use gluten-free flour and certified gluten-free oats.
- Tip: To make ahead, prepare the filling and topping separately, then assemble and bake just before serving.
Storing & Reheating Easy Rhubarb Crisp Recipe with Oat Topping
Short-Term Storage
Store in an airtight container in the fridge. Store leftovers in an airtight container in the fridge for up to 5 days. Make-ahead tip: The filling can be made up to 1 day ahead and the topping can be made up to 2 days ahead. Store separately in the fridge.
Freezing Easy Rhubarb Crisp Recipe with Oat Topping
Freeze baked and cooled crisp for up to 3 months. Thaw overnight in the fridge before reheating.
How to Reheat Without Drying It Out
Oven: Reheat in a 350°F (175°C) oven for 15-20 minutes, or until heated through. Microwave: Reheat in the microwave for 1-2 minutes, or until heated through. May lose some crispiness.
Recipe Notes
- Chef tip: For a less tart filling, use 3/4 cup sugar instead of 1 cup.
- Best substitution: No substitutions for rhubarb, as it's the star of the dish.
- Make-ahead: See storage notes for make-ahead tips.
- Scaling: This recipe can be doubled and baked in a 9×13-inch baking dish for a larger batch.
- Troubleshooting: If the topping is browning too quickly, cover the dish loosely with aluminum foil.
Want to level up this recipe?
Pyrex baking dish — Even heat distribution for perfect baking → Check price on Amazon
Easy Rhubarb Crisp Recipe with Oat Topping
Ingredients
Main Ingredients
- Rhubarb
- Sugar
- Lemon juice
- All-purpose flour
- Old-fashioned oats
- Melted butter
Seasonings
- Vanilla extract
- Cinnamon
- Salt
Optional Toppings
- Whipped cream or vanilla ice cream
Instructions
- Prepare rhubarb: Preheat oven to 375°F (190°C). Cut rhubarb into 1-inch pieces and place in a 9-inch pie dish. Sprinkle with 1 cup sugar and 1 tablespoon lemon juice. Toss to coat and let sit for 10 minutes.
- Make oat topping: In a medium bowl, combine 1 cup all-purpose flour, 1 cup old-fashioned oats, 1/2 cup brown sugar, 1/2 teaspoon cinnamon, and 1/4 teaspoon salt. Add 1/2 cup melted butter and mix until crumbly.
- Assemble and bake: Sprinkle oat topping evenly over rhubarb. Bake for 30-35 minutes, or until golden and bubbly.
- Serve: Let cool for 5 minutes, then serve with whipped cream or vanilla ice cream.
Notes
- Chef tip: For a less tart filling, use 3/4 cup sugar instead of 1 cup.
- Best substitution: No substitutions for rhubarb, as it's the star of the dish.
- Make-ahead: See storage notes for make-ahead tips.
- Scaling: This recipe can be doubled and baked in a 9×13-inch baking dish for a larger batch.
- Troubleshooting: If the topping is browning too quickly, cover the dish loosely with aluminum foil.
Storage
- Fridge: Store leftovers in an airtight container in the fridge for up to 5 days.
- Freezer: Freeze baked and cooled crisp for up to 3 months. Thaw overnight in the fridge before reheating.
- Oven reheat: Reheat in a 350°F (175°C) oven for 15-20 minutes, or until heated through.
- Microwave reheat: Reheat in the microwave for 1-2 minutes, or until heated through. May lose some crispiness.
- Make ahead: The filling can be made up to 1 day ahead and the topping can be made up to 2 days ahead. Store separately in the fridge.
Nutrition Per Serving
- Calories: 270
- Protein: 3g
- Fat: 10g
- Carbs: 45g
- Fiber: 2g
- Sugar: 37g
- Sodium: 120mg
- Cholesterol: 25mg
- Sat. Fat: 6g
Nutritional values are estimates only. Actual values may vary by brand and portion size.
Easy Rhubarb Crisp Recipe with Oat Topping FAQs
Yes, but it may release more liquid. Drain excess liquid before baking.
Too much liquid was released from the rhubarb. Drain excess liquid before baking.
No, the air fryer is not suitable for baking this dessert.
Yes, see storage notes for make-ahead tips.
Reheat in a 350°F (175°C) oven for 15-20 minutes, or until heated through.
A Warm Final Note
I can’t wait for you to try Easy Rhubarb Crisp Recipe with Oat Topping and see how effortlessly it comes together. When you make it, pop back here and leave a rating or share how it turned out — I love hearing from you!
