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Rhubarb oatmeal bars on a copper cooling rack.

Rhubarb Oatmeal Bars

Heather Smoke
Moist and chewy oatmeal bars, filled with tart rhubarb and sweet strawberry jam.

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4.97 from 33 votes
Prep Time 20 minutes
Cook Time 1 hour
Total Time 1 hour 20 minutes
Course Dessert
Cuisine American
Servings16

Ingredients
 

Crust and Topping

  • 1 ½ cups all-purpose flour, spooned and leveled
  • 1 cup old-fashioned oats
  • ½ cup dark brown sugar, lightly packed
  • 1 tsp coarse Kosher salt (if using table salt, use half the amount)
  • 1 tsp baking powder
  • 1 tsp ground cinnamon
  • 1 cup (2 sticks) cold, unsalted butter, diced

Filling

  • 12 oz rhubarb, diced into 1/4 - 1/2 inch cubes (about 2 1/2 cups diced)
  • ¼ tsp baking soda
  • ½ cup granulated sugar
  • ¼ cup all-purpose flour, spooned and leveled
  • ½ cup strawberry jam or preserves
  • 1 tbsp lemon juice
  • 1 tsp vanilla extract

Instructions
 

  • Preheat the oven to 350.  Spray a square 8×8 baking dish with non-stick spray.
  • In your food processor, or with a pastry cutter, combine the crust/topping ingredients until pea-sized pieces of butter remain.
  • Reserve 1 ½ cups of the crumbs for the topping (chill in the refrigerator until needed), and press the remainder of the crumbs firmly against the bottom of the baking dish.  Bake crust for 20 minutes.
  • Meanwhile, in a bowl toss the rhubarb with the baking soda, sugar and flour until all the fruit is coated.  Stir in the jam, lemon juice and vanilla.
  • Spread the rhubarb mixture over the hot crust.  Bake for 30 minutes.
  • Sprinkle the reserved crumbs over the fruit and bake for an additional 20-25 minutes until topping is golden brown.
  • Let cool on the counter for at least two hours to set before slicing into squares.

Notes

These can be served slightly warm or room temperature, and are wonderful with ice cream.  These bars are best eaten within 1-2 days.
Keyword Oatmeal Bars, Rhubarb
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