Oatmeal Rhubarb Bars

Slice of oatmeal rhubarb bar on a spatula.

These Oatmeal Rhubarb Bars feature a tangy sweet rhubarb filling and buttery crumble topping. They're easy to transport and perfect for summer potlucks and gatherings.

5 from 2 votes

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Prep Time: 10

Cook Time: 35

Total Time: 45

Servings: 16

Calories: 340kcal

Ingredients

For the crust and crumbles:

2 cups all purpose flour (spooned and leveled)
1 1/2 cups old fashioned rolled oats
1 cup packed brown sugar
1 cup chopped pecans
1 teaspoon ground cinnamon
3/4 teaspoon Kosher salt
3/4 teaspoon baking soda
1 cup unsalted butter (melted and cooled)
1 large egg (beaten)

For the rhubarb filling:

3 cups chopped rhubarb (from about 5-6 large stalks)
1 cup granulated sugar
2 Tablespoons cornstarch
1/4 cup water
1/2 teaspoon ground ginger
Squeeze of lemon juice

Instructions

Preheat the oven to 350 degrees. Grease a 9 x 13 inch pan.
In a medium saucepan, stir together the rhubarb, sugar, cornstarch, water, and ginger. Bring the mixture to a boil, stirring often and making sure the sugar melts and cornstarch is incorporated. Lower the heat to a very gentle simmer and continue to cook until rhubarb is soft and broken down, 7-10 minutes. Stir in a squeeze of lemon juice. Set aside to cool. I sometimes pop it in the fridge while I’m making the crust.
In a bowl, stir together the pecans, flour, oats, sugar, salt, soda, and cinnamon until well combined. Add the melted butter and the egg, stirring until a crumbly dough begins to form.
Spread half of the crumb mixture over the bottom of the pan, pressing it down with your hands. Gently spread the rhubarb filling on top. Top with the butter mixture, using your hands to break it up into small crumbles.
Place the pan in the oven and bake for 30-35 minutes, or until top is golden brown.

Notes

These bars keep well at room temperature about 3 days or 5-7 days in the fridge. See the above post for freezer instructions.

Equipment

STAUB Ceramic Casserole Dish

Course Brownies & Bars

Cuisine American

Keyword oatmeal bars, oatmeal rhubarb bars

Nutrition

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