Easy Rhubarb Crisp Recipe with Oat Topping
Easy Rhubarb Crisp is the perfect summer dessert with a crispy oat topping. After making this many times, I’ve discovered the trick to a golden, crispy topping every time. Keep reading for my best tips. If you love recipes like this, you’ll also enjoy Easy Lemon Curd Chia Pudding Recipe for Breakfast and Homemade Sugar Free Blueberry Syrup for Refreshing Drinks.
Why This Easy Rhubarb Crisp Recipe with Oat Topping Is Pure Comfort
- Golden, crispy oat topping
- Tart and sweet rhubarb filling
- Better than takeout and easy to make
- Perfect for summer cookouts
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
- Old-fashioned oats
- All-purpose flour
- Melted butter
- Ground cinnamon
- Salt
- Vanilla extract
- Optional: Vanilla ice cream
- Optional: Whipped cream
📝 Ingredient Notes
- Rhubarb: Make sure to use fresh rhubarb for the best flavor.
🛒 Tools & Equipment I Recommend
- Food Processor — Saves time chopping rhubarb → See on Amazon
- Silicone Baking Mat — Prevents sticking and easy cleanup → See on Amazon
How to Make Easy Rhubarb Crisp Recipe with Oat Topping
- Prepare the rhubarb filling: Preheat oven to 375°F (190°C). In a large bowl, mix rhubarb, 1 cup sugar, lemon juice, and 1 tbsp flour. Transfer to an 8×8-inch baking dish.
- Make the oat topping: In another bowl, combine oats, 1/2 cup sugar, 1/2 cup flour, cinnamon, and salt. Stir in melted butter until crumbly. Sprinkle over rhubarb mixture.
- Bake: Bake for 30-35 minutes, or until golden and bubbly. Let cool slightly before serving.
Cook's Tips for Perfect Easy Rhubarb Crisp Recipe with Oat Topping
- Common mistake and fix: Don't overmix the topping. It should be crumbly, not doughy.
- Pro tip: For a crisper topping, use quick-cooking oats instead of old-fashioned.
- Pro tip: To prevent a soggy topping, don't add the topping until just before baking.
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: Prepare the filling and topping separately up to a day ahead. Assemble and bake just before serving.
Freezing Easy Rhubarb Crisp Recipe with Oat Topping
Freeze baked and cooled crisp for up to 3 months. Thaw overnight before reheating.
How to Reheat Without Drying It Out
Oven: Reheat in the oven at 350°F (175°C) for 15-20 minutes. Microwave: Reheat individual portions in the microwave for 1-2 minutes.
Recipe Notes
- Chef tip: For a gluten-free version, use certified gluten-free oats and flour.
- Best substitution: You can substitute the rhubarb with apples or berries for a different flavor.
- Make-ahead: See storage notes for make-ahead tips.
- Scaling: This recipe can be doubled and baked in a 9×13-inch dish.
- Troubleshooting: If the topping isn't browning, broil for 1-2 minutes at the end of baking, watching closely to prevent burning.
Want to level up this recipe?
High-quality 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
- Old-fashioned oats
- All-purpose flour
- Melted butter
Seasonings
- Ground cinnamon
- Salt
- Vanilla extract
Optional Toppings
- Vanilla ice cream
- Whipped cream
Instructions
- Prepare the rhubarb filling: Preheat oven to 375°F (190°C). In a large bowl, mix rhubarb, 1 cup sugar, lemon juice, and 1 tbsp flour. Transfer to an 8×8-inch baking dish.
- Make the oat topping: In another bowl, combine oats, 1/2 cup sugar, 1/2 cup flour, cinnamon, and salt. Stir in melted butter until crumbly. Sprinkle over rhubarb mixture.
- Bake: Bake for 30-35 minutes, or until golden and bubbly. Let cool slightly before serving.
Notes
- Chef tip: For a gluten-free version, use certified gluten-free oats and flour.
- Best substitution: You can substitute the rhubarb with apples or berries for a different flavor.
- Make-ahead: See storage notes for make-ahead tips.
- Scaling: This recipe can be doubled and baked in a 9×13-inch dish.
- Troubleshooting: If the topping isn't browning, broil for 1-2 minutes at the end of baking, watching closely to prevent burning.
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 before reheating.
- Oven reheat: Reheat in the oven at 350°F (175°C) for 15-20 minutes.
- Microwave reheat: Reheat individual portions in the microwave for 1-2 minutes.
- Make ahead: Prepare the filling and topping separately up to a day ahead. Assemble and bake just before serving.
Nutrition Per Serving
- Calories: 240
- Protein: 3g
- Fat: 7g
- Carbs: 45g
- Fiber: 2g
- Sugar: 32g
- Sodium: 100mg
- Cholesterol: 15mg
- Sat. Fat: 4g
Nutritional values are estimates only. Actual values may vary by brand and portion size.
Easy Rhubarb Crisp Recipe with Oat Topping FAQs
Yes, see storage notes for make-ahead tips.
It may need a few more minutes in the oven or a quick broil at the end of baking. Watch closely to prevent burning.
Yes, but it may release more liquid, requiring a longer baking time.
While it's not a low-calorie dessert, it's made with whole ingredients and can be enjoyed in moderation.
No, this recipe requires oven baking for even heat distribution and crispy topping.
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!
