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Rhubarb Crumble Bars on plate
4.70 from 20 votes
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Rhubarb Crumble Bars

The buttery oatmeal crust and crumble are sweetened with brown sugar and complement the sweet-tart rhubarb center perfectly.  These are the best rhubarb bars I have ever eaten!
Prep Time20 minutes
Cook Time30 minutes
Total Time50 minutes
Course: Bars
Cuisine: American
Keyword: bars, crumble, crunch, easy, how to make bars with rhubarb, old fashioned, rhubarb, streusel, what is rhubarb?, without strawberries
Servings: 9 x13 pan
Calories: 124kcal
Author: Michaela Kenkel

Ingredients

CRUST/CRUMBLE

  • 1 cup 2 sticks butter, softened
  • 1 cup brown sugar
  • 1 1/2 cups oatmeal
  • 1 1/2 cup flour
  • 1/2 teaspoon baking soda

FILLING

  • 3 cups rhubarb diced
  • 1 1/2 cups sugar
  • 2 teaspoons vanilla
  • 1/4 cup water
  • 3 Tablespoons corn starch

Instructions

  • Preheat oven to 350 degrees. Spray a 9x13 baking dish with non-stick cooking spray, set aside.
  • FILLING: In a medium-sized saucepan over medium heat, stir together rhubarb, sugar, vanilla, water, and corn starch. Cook until it thickens, about 20 minutes or so, stirring regularly so it doesn't stick.
  • CRUST/CRUMBLE: In a bowl, using a mixer or a wooden spoon, cream the butter until it's smooth. Add in brown sugar and combine well. Mix in baking soda and oatmeal. Fold in flour. The mixture will be crumbly.
  • Press half of the crust/crumble mixture into the bottom of the prepared pan. Spread thickened filling over the top. Add remaining crust/crumble mixture to the top.
  • Bake for 30 minutes. It can be served warm with ice cream. Store in the refrigerator.

Notes

1/2 cup of chopped nuts can be added to the crust/crumble mixture if desired.

Nutrition

Serving: 1bar | Calories: 124kcal | Carbohydrates: 29g | Protein: 1g | Sodium: 30mg | Fiber: 1g | Sugar: 20g