Easy Rhubarb Crisp Recipe

This easy Rhubarb Crisp recipe has the perfect balance of tart and sweet, with a crumbly oat topping and juicy rhubarb filling for a delicious spring dessert. Served warm from the oven with a big scoop of vanilla ice cream, it’s pure comfort food!

Close-up of a baked rhubarb crisp in a glass dish on wooden trivets. The dessert has a golden-brown oat topping over a rhubarb filling.

I am fortunate to have a couple of rhubarb plants in my garden. Each spring they produce a bountiful crop for making delicious rhubarb desserts like Strawberry Rhubarb Pie and Rhubarb Tarte Tatin.

As kids we would eat fresh, raw rhubarb, sweetening it by dipping it in a bowl of sugar. It is important to note that only the stalks are edible, the leaves are toxic and should never be consumed!

A hand holds a bunch of fresh rhubarb with large green leaves and red stalks, set against a background green grass.

Is there a difference between fruit crisps and crumbles?

Both crisps and crumbles use seasonal fruit topped with a buttery, crumbly topping and are served warm.The subtle difference is:

  • A Crisp typically contains oats (rolled oats) or oatmeal which give it a slightly crunchier texture.
  • A Crumble is also made with flour, butter, and sugar but does not include oats. Crumble toppings are usually softer and less crunchy.
Close-up of a baked rhubarb crisp in a glass dish. The dessert has a golden-brown oat topping over a rhubarb filling.

Key Ingredients

Ingredients for a rhubarb dessert on a wooden board: chopped rhubarb in a glass bowl, oats, flour, brown sugar, butter in a metal bowl, with measuring spoons of sugar, cinnamon, and a small bowl of maple syrup.

Crisps, cobblers, and crumble desserts are easy to make with simple ingredients and any seasonal fruit. For this recipe I used the following ingredients:

  • Fresh Rhubarb – use bright red stalks, they tend to be a bit sweeter than green stalks.
  • Maple Syrup – pure maple syrup is a tasty choice to sweeten the tart rhubarb.
  • Minute Tapioca – minute tapioca is my preferred choice for thickening fruit filling in crisps, pies and cobblers. It does not alter the taste of the fruit and leaves the fruit with a glossy look, unlike the cloudy appearance you get when using cornstarch or flour as a thickener.
  • Oats – typically called rolled oats, old-fashioned oats or large flaked oats work best.
What is the difference between oats and oatmeal?

The whole grain oat is made up of the bran, germ, and endosperm. 

Oatmeal is a processed form of oats that has been de-husked, steamed, and flattened. 

Rhubarb crisp variations

A classic rhubarb crisp consists of simple ingredients like fresh rhubarb, sugar, flour, butter, and oats. Some tasty additions could include adding the following:

  • Chopped toasted almonds, walnuts, or pecans.
  • Shredded coconut
  • Add fresh strawberries to the rhubarb filling.

Instructions

Chopped rhubarb sprinkled with ground tapioca in a glass bowl with a wooden spoon.

Toss together rhubarb, maple syrup, cinnamon and minute tapioca.

A wooden-handled pastry blender mixes oats, flour, and butter in a metal bowl, preparing a crumbly topping.

Prepare the topping by blending the oats, flour, brown sugar, cinnamon, and butter.

A glass dish filled with uncooked rhubarb crisp, topped with a crumbly layer of oats, butter and sugar. Fresh rhubarb stalks are visible on the side.

Pour the filling into baking pan, then cover with the crumb mixture.

Close-up of a baked rhubarb crisp in a glass dish on wooden trivets. The dessert has a golden-brown oat topping over a rhubarb filling.

Bake in oven 375º F for 45- 50 minutes. The top should be golden brown.

Tips to make the best rhubarb crisp:

  • Don’t over-mix the crumb mixture, it should be lumpy.
  • Place the prepared crisp on a baking sheet or foil to catch any over-flowing juice. As the rhubarb crisp is baking, the rhubarb softens and releases its juices and creates a bubbly, syrupy filling which can tend to overflow.
A close-up of a warm rhubarb crisp with golden, crunchy oat topping and topped with a scoop of creamy vanilla ice cream.
Can you use frozen rhubarb?

My preference is fresh rhubarb, but frozen rhubarb will work in this recipe. Frozen rhubarb will be softer compared to fresh. If you are using frozen rhubarb, thaw it in a strainer to remove excess liquid. As well, add an additional tablespoon of minute tapioca to thicken the filling up.

Why use minute tapioca to thicken fruit crisps and crumbles?

Minute tapioca is a great thickener that does not add any flavor to the fruit filling. It helps to thicken the fruit juices that are released during baking. Adding tapioca thickens the fruit to a smooth, jelly-like consistency.

Tasty Rhubarb Recipes

Enjoy the tart, tangy flavor of Rhubarb in these delicious recipes!

Close-up of a baked rhubarb crisp in a glass dish on wooden trivets. The dessert has a golden-brown oat topping over a rhubarb filling.

Easy Rhubarb Crisp Recipe

Laureen King
This easy Rhubarb Crisp recipe has the perfect balance of tart and sweet, with a crumbly oat topping and juicy rhubarb filling for a delicious spring dessert.
5 from 1 vote
Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Course Dessert
Cuisine American
Servings 8
Calories 285 kcal

Ingredients
  

Rhubarb Filling

  • 7-8 cups fresh rhubarb chopped
  • 1/2 cup pure maple syrup
  • 1 teaspoon ground cinnamon
  • 1 tablespoon minute tapioca

Crumb Topping

  • 1/2 cup all purpose flour
  • 1/2 cup large flaked oats (old-fashioned oats)
  • 1/2 cup brown sugar
  • 1 teaspoon ground cinnamon
  • 1/2 cup butter room temperature
  • pinch salt

Instructions
 

  • Preheat the oven to 375ºF.

Prepared the rhubarb filling

  • Wash rhubarb, remove leaves and trim the ends. Chop into 1/2 inch pieces.
  • Place rhubarb in a large bowl, add the maple syrup, cinnamon. Toss together.
  • Sprinkle rhubarb mixture with minute tapioca, and toss to combine.
  • Spread into an 8×8 baking pan.

Prepare the crumb topping

  • In a medium sized bowl blend the flour, oats, brown sugar, salt and cinnamon.
  • Cut in the butter using a pastry blender or fork until the mixture is coarse crumbs.
  • Sprinkle the crumb mixture evenly over the rhubarb.
  • Bake for 45-50 minutes. The top should be golden brown and the fruit bubbling.
  • Serve warm with vanilla ice cream or whipped cream.

Nutrition

Calories: 285kcalCarbohydrates: 43gProtein: 3gFat: 12gSaturated Fat: 7gPolyunsaturated Fat: 1gMonounsaturated Fat: 3gTrans Fat: 0.5gCholesterol: 31mgSodium: 102mgPotassium: 403mgFiber: 3gSugar: 27gVitamin A: 465IUVitamin C: 9mgCalcium: 137mgIron: 1mg
Keyword rhubarb crisp
Tried this recipe?Let us know how it was!
Close-up of a baked rhubarb crisp in a glass dish on wooden trivets. The dessert has a golden-brown oat topping over a rhubarb filling.

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