Very Berry Rhubarb Bars


These bars feature a cinnamon-shortbread crust, a fruity sweet-tart filling, and a crunchy oat crumb topping. The best early summer has to offer!

Prep Time:
20 mins
Cook Time:
1 hrs
Total Time:
1 hrs 20 mins
1 13x9-inch pan of bars



  • 2 cups all-purpose flour

  • ½ cup packed brown sugar

  • ½ teaspoon ground cinnamon

  • 1 cup unsalted butter


  • 4 eggs

  • 2 cups white sugar

  • ½ cup flour

  • ½ teaspoon salt

  • 4 cups diced rhubarb

  • 2 cups sliced strawberries

  • 1 cup blueberries

Crumb Topping:

  • ½ cup flour

  • ½ cup brown sugar, packed

  • ½ cup rolled oats

  • ¼ cup butter, melted

  • ½ teaspoon ground cinnamon


  1. Preheat oven to 350 degrees F (175 degrees C). Grease a 13x9-inch baking dish.

  2. Mix 2 cups flour, 1/2 cup brown sugar, and 1/2 teaspoon cinnamon together in a bowl. Cut 1 cup unsalted butter into the flour mixture until crumbs form; press into bottom of prepared baking dish.

  3. Bake crust in preheated oven until golden brown, about 15 minutes.

  4. Blend eggs, white sugar, 1/2 cup flour, and salt in a blender until smooth; pour into a large bowl. Fold rhubarb, strawberries, and blueberries into the blended egg mixture. Spread the fruit mixture onto the baked crust.

  5. Mix 1/2 cup flour, 1/2 cup brown sugar, oats, melted butter, and 1/2 teaspoon cinnamon together in a bowl; sprinkle over the fruit mixture.

  6. Bake in preheated oven until lightly browned on top and the filling has set, 45 to 50 minutes.

Cook's Note:

You can make a thinner bar by baking in a jelly-roll pan and reducing the baking time accordingly.

Nutrition Facts (per serving)

272 Calories
11g Fat
42g Carbs
3g Protein
Nutrition Facts
Servings Per Recipe 24
Calories 272
% Daily Value *
Total Fat 11g 14%
Saturated Fat 6g 32%
Cholesterol 56mg 19%
Sodium 79mg 3%
Total Carbohydrate 42g 15%
Dietary Fiber 1g 5%
Total Sugars 27g
Protein 3g
Vitamin C 10mg 52%
Calcium 39mg 3%
Iron 1mg 6%
Potassium 134mg 3%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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