The BEST Rhubarb Crisp Recipe Ever!
This easy rhubarb crisp recipe has the just the perfect combination of tangy rhubarb mixture with a generous, thick crisp topping. I mean it…it’s the BEST way to make rhubarb desserts!
I know everyone claims that their recipes are the BEST EVER. But, seriously, I mean it! (tee hee)
When my husband walked in the door the other day with a bag full of rhubarb we’d been gifted, I knew exactly what I was making first:
Mom’s Rhubarb Crisp is my all time favorite way to use rhubarb. Her old-fashioned rhubarb recipe is such an easy one and makes a perfect & special dessert.
I’ve tried many crisps in my day, and I still say this is the best rhubarb crisp recipe ever. Although sweet desserts involve a lot of personal preference, I find it has just the perfect balance of sweetness to the tart rhubarb, and the thick buttery oat topping makes it the best ever!
Why You’ll Love this Old Fashioned Rhubarb Crisp Recipe
- Perfect Sweet-Tart Balance – The right amount of sugar brings out the best in fresh rhubarb.
- Generous, Thick Crisp Topping – No skimpy topping here! It’s rich, buttery, and just the right amount of crunchy.
- Simple Ingredients – Made with pantry staples for an easy and delicious homemade dessert.
- Great for Spring & Summer – A perfect way to use fresh rhubarb from the garden or farmer’s market.
- Easy to Make Ahead – Prep the filling and topping in advance for a quick dessert anytime.
Ingredients for Rhubarb Crisp 9×13 pan:
(See the printable recipe card below for exact measurements and instructions!)
- Rhubarb – Fresh or frozen, chopped into bite-sized pieces.
- Granulated White Sugar – Balances rhubarb’s natural tartness and draws out its juices.
- Flour – Helps thicken the fruit filling.
- Brown Sugar – Adds a deep, caramel-like sweetness to the crisp topping.
- Oats – Gives the topping a delicious, crunchy texture.
- Butter – The key to a rich, buttery crisp topping.
The BEST Rhubarb Crisp Recipe Ever!
Make the best rhubarb crisp with this old-fashioned recipe, featuring a generous, crunchy oat topping and a perfectly tangy rhubarb filling.
Ingredients
- 5 cups rhubarb, cut in 1/2 inch pieces
- 3 Tablespoons flour
- 1 1/2 cups sugar
- 1 cup brown sugar
- 1 1/2 cups flour
- 1 cup oatmeal
- 1 cup butter
Instructions
- Mix the rhubarb with 3 tablespoons flour and 1 1/2 cups sugar. Pour into the bottom of a 9 x 13 pan.
- Mix together the remaining brown sugar, flour, and oatmeal. Cut in the butter using a pastry blender until the mixture looks like course oats.
- Pour the topping over the rhubarb and gently pat down.
- Bake at 350 degrees for approximately 45 minutes. The juices should be bubbling around the edges and it should be golden brown.
- Serve hot or cold – with or without ice cream. Either way, this rhubarb crisp is delicious!
Nutrition Information:
Yield: 12 Serving Size: 1 gramsAmount Per Serving: Unsaturated Fat: 0g
How to Portion, Cook, and Freeze This Recipe to Fit Your Lifestyle
Making for Two? Halve the ingredients and bake in an 8×8-inch dish.
Freezing Ahead Unbaked? Assemble the crisp, cover tightly, and freeze unbaked. Let it sit at room temperature for 15 minutes before baking to ensure even cooking. Bake according to directions, adding about 10-15 minutes extra baking time.
Freeze Ahead Baked? Prepare according to directions and then freeze tightly covered. Thaw and reheat when ready to use.
Step by Step Instructions for Rhubarb Crisp
1.Toss rhubarb with sugar and flour, then spread it in a baking dish. 
2.Mix together the oatmeal topping with a pastry blender (or see the melted butter trick below). 
3.Pat the oatmeal topping over the rhubarb. 
4.Bake until golden brown and bubbling.
Kitchen Hack: Use Melted Butter for Crisp Toppings!
I recently learned a little hack for making crisp toppings even quicker and easier. Of course you can cut in the butter with a pastry blender and it will work great. Or, you can melt the butter, mix it into the dry ingredients, and then place the topping in the fridge to cool while you prepare the fruit filling. I now use this technique with all my crisp recipe.
Here’s a litttle video that demonstrates it:
Tips for Rhubarb Crisp
- Use fresh or frozen rhubarb – No need to thaw frozen rhubarb; just add a few extra minutes to the bake time.
- Melted butter shortcut – Instead of cutting in cold butter, melt it and mix it into the dry ingredients for a quick and easy crisp topping.
- Let it cool slightly before serving – This helps the filling set up and makes it easier to scoop.
For more delicious desserts recipes, you might want to check out these:
- If you’re looking for another rhubarb recipe, you’ll love this baked sticky rhubarb pudding.
- Quick & easy apple crisp with apple pie filling
- Grandma’s Strawberry Pie with Jello
- You’ll love this classic recipe – lemon meringue pie
- Banana cream pie just like my mom made
- You’re Going to Want to Try this Rhubarb Cake Recipe!
- Pumpkin bread with cake mix
- You’ll love this peach crisp recipe!
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Such a classic home recipe. Rhubarb is just starting to come in season here, so the timing of this post is perfect. Appreciate you sharing!
This rhubarb crisp looks like the perfect balance of sweet and tart! I love the tip about using melted butter for the topping—makes it so much easier. I’ll definitely be snapping a photo of this beauty once it’s out of the oven; Nano Banana is an AI image editor that’s great for making food pics look mouthwatering. Thanks for the recipe!
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This sounds absolutely irresistible—tangy rhubarb paired with a thick, buttery crisp topping is hard to beat, especially with a scoop of vanilla ice cream on top. I love how your excitement comes through so naturally; those seasonal ingredients always inspire the best desserts. Recipes like this feel especially trustworthy when there’s a real story behind them. I’ve seen similar cozy, home-baked favorites spark great conversations in communities like CK Lottery, where people enjoy sharing dishes they look forward to every season.
This sounds absolutely irresistible—tangy rhubarb paired with a thick, buttery crisp topping is hard to beat, especially with a scoop of vanilla ice cream on top. I love how your excitement comes through so naturally; it’s clear this is one of those tried-and-true seasonal desserts you make the moment rhubarb shows up. Recipes like this always feel more trustworthy when there’s a real story behind them. I’ve seen similar cozy, home-baking favorites shared in community spaces like BHT-Club, where people swap the dishes they genuinely can’t wait to make again.