Rhubarb Crisp

This Rhubarb Crisp has a buttery oat topping with a layer of sweet and tart rhubarb below. This recipe is a simple and delicious way to enjoy rhubarb!

This post may contain affiliate links. As an amazon associate, I earn from qualifying purchases. See my full Disclosure Policy for details.

Rhubarb Crisp

I feel like rhubarb is one of those foods that people really like or they don’t. There doesn’t seem to be any middle ground, does there?

When I think of rhubarb, I’m often reminded of my grandma’s Strawberry Rhubarb Pie. I wish I had the recipe for it. ? Like so many grannies, she didn’t write down the recipe, and now that she’s gone, so is her recipe.

Up until I was an adult, that was the only rhubarb recipe I recall eating. Until I met a lady named Mary at church – She makes an awesome Rhubarb Cake. That reminds me I should ask her for the recipe!! ?

Anyways, over the years I would get rhubarb in CSA boxes or from friends, neighbors, or relatives. This recipe is a great way to enjoy rhubarb with its buttery oatmeal topping and sweetly tart fruit. It’s simple to make and comes together pretty quickly. We like to serve it with a big scoop of vanilla ice cream. I hope you enjoy the recipe!

Recipe for Rhubarb Crisp

For the Rhubarb Crisp:

• rhubarb
• all-purpose flour
• oatmeal
• light brown sugar
• butter
• ground cinnamon

Sugar Sauce:

• granulated sugar
• cornstarch
• cold water
• vanilla extract

How to make Rhubarb Crisp

1. Preheat oven to 350°F. Lightly spray or butter a 7-in. x 11-in. or 8.5-in. x 11-in baking dish and set aside.
2. Mix together the flour, oats, cinnamon, brown sugar, and melted butter.
3. Press one-half of crumb mixture into the prepared baking dish.
4. Add chopped rhubarb atop pressed-in crumb mixture in the baking dish.
5. Whisk sugar, cornstarch, and water together in a glass bowl. Microwave until thick, clear, and bubbly – approximately 3-5 minutes. Remove from the microwave and whisk in the vanilla. Pour the sugar sauce evenly over rhubarb.
6. Top with evenly with the remaining crumb mixture.
7. Bake until edges are bubbling and the crumb topping is browned, about 30-40 minutes.

Rhubarb Crisp: Tips and Tricks

If you have questions about making this Rhubarb Crisp recipe, I have answers! Take a look at this section before leaving a comment if you run into trouble or just want some suggestions.

• Can I use frozen rhubarb to make Rhubarb Crisp?

Absolutely! Frozen rhubarb is a great way to enjoy this recipe all year long! Be sure to thaw it first before using it.

• Does Rhubarb Crisp need to be refrigerated?

Much like many other baked desserts, it is ok to leave it out for a day or two, any longer, it really needs to be refrigerated. 

• Can Rhubarb Crisp be frozen?

Rhubarb Crisp can be frozen!

To freeze Rhubarb Crisp before baking, prepare the recipe as directed up to the baking point. Wrap it well in plastic wrap and add a layer of aluminum foil or the casserole dish lid (if it comes with one) over the top. Allow it to thaw completely. Remove the plastic wrap and aluminum foil before baking as instructed in the recipe.

To freeze Rhubarb Crisp after baking, allow the food to cool completely before wrapping well in plastic wrap. Add a layer of aluminum foil or the casserole dish lid (if it comes with one) over the top. To reheat, allow the crisp to thaw completely. Remove the plastic wrap and recover the dish with aluminum foil. Bake in a 350°F oven until warm, removing the aluminum foil the last few minutes to help crisp up the topping.

• Why is my Rhubarb Crisp runny?

While the crisp is warm, it is typical for the fruit juices to be a little runnier than after it has had a chance to cool. As long as you used the right amount of thickener, it will gel as it cools down.

Other recipes you may enjoy

• Strawberry Shortcake Parfaits
• Easy Southern Peach Cobbler
• No-Bake Lemon Cheesecake
• Orange Streusel Coffee Cake
• Easy Apple Crumble Recipe