Grandma's Rhubarb Crunch
Dessert Recipe

An Old Fashioned Rhubarb Dessert Recipe

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Here is the best one of this old fashioned rhubarb recipe!

This recipe can be made with fresh or frozen rhubarb.

In addition to the rhubarb, this recipe contains ingredients you probably already have in your kitchen, so let's get baking!

Rhubarb Crunch Dessert RecipeGrandma's Rhubarb Recipe


Note - If you are using frozen rhubarb for this recipe, thaw it first, in a sieve, over a bowl, and use the excess liquid as part of the 1 cup water in the "Topping" ingredient list below.

1 cup all-purpose flour
3/4 cup rolled oats
1 cup packed brown sugar
1 tsp. cinnamon
1/2 cup butter, melted
3 1/2 cups fresh or frozen rhubarb


1 cup granulated sugar
2 tbsp. cornstarch
1 cup *water
1 tsp. vanilla extract
red food colouring, optional



In a large bowl, combine the flour, rolled oats, brown sugar, cinnamon, and the butter.

Stir the mixture with a fork, until the mixture resembles coarse crumbs.

How to Make Rhubarb Crunch

Press one half of the mixture into an ungreased 9" square baking dish.

Sprinkle the rhubarb over the crumb base in the baking pan.


In a pan, combine the granulated sugar and cornstarch and mix to combine.

Add the water and stir until smooth.

Cook mixture over medium-high heat, and bring mixture to a boil.

Cook for about 2 minutes, stirring almost constantly to avoid sticking and burning, about 2 minutes or until mixture is thickened.

Remove from heat and stir in the vanilla, and the food colouring if desired.

GO to How to Make Green Rhubarb Red

Pour the topping over the rhubarb in the baking dish.

Top with the remaining crumb mixture.

Bake at 350° F for about 40 - 50 minutes, or until the rhubarb filling begins to bubble.

Serve warm with ice cream, whipped cream, or whipped dessert topping, or plain.

Serves 8 - 10.

How to Make Old Fashioned Rhubarb Dessert Recipe

There you go! ... a rhubarb recipe just like the one Grandma used to make ;)

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