Strawberry Rhubarb Bars

These strawberry rhubarb bars is super easy to throw together! It can all be made in one bowl and you don’t need to use your mixer.  

As a child one of the pies I always remember enjoying in the summer was a strawberry rhubarb pie.

There is just something about that flavor combination that screams summer is here. But making a pie isn’t always something I feel like signing up for.

But a strawberry rhubarb bar that is whipped up in under 30 minutes? Now that I can always sign up for. 

How To Make These Strawberry Rhubarb Bars- Step By Step

I wanted to simplify this bar by making it one bowl. This strawberry rhubarb bar uses the same mixture for the bottom and top of the bar to make these super speedy to come together.

Step 1: Line Your 9×9 Pan With Parchment Paper

Step 2: Make the oatmeal crumb mixture.  Whisk together your flour, oats, baking powder, brown sugar, white sugar, and salt.

Pro Tip: You want to make sure to use old fashioned oats. I tried using quick oats but they kind of disappeared into the mixture. Using old fashioned oats gave the bars better texture. 

Step 3: Once everything has been whisked together, then add in your butter. Cut the butter into tablespoons so it’s more easily incorporated.

Step 4:  I used a pastry cutter to cut the butter into the dry ingredients. You could even use your hands to rub the butter into the mixture, if you don’t want to dirty another utensil.

Step 5: Reserve a cup of the oatmeal mixture for the topping

Step 6: Press the rest of it into the bottom of a 9×9 pan. I used the bottom of a measuring cup to press the mixture in.

Step 7: Prepare your filling by stirring together sliced strawberries and rhubarb, lemon juice, cornstarch and sugar.

Step 8: Pour the filling over the crumb mixture that is the pan and spread it out.

Step 9: Sprinkle the 1 cup reserved crumble over the top and bake!

Do I Need To Use Cold Butter?

Yes! You want to be sure to use cold butter for this. Just as if you were making pie dough, you want to use cold butter, because it will create pockets of butter that will then melt and steam in the oven creating a bit of a flaky texture.

Can I Use A Different Sized Pan?

I know not all of you probably have a 9×9 pan. So you definitely can use your square 8×8 pan. Your bars will be a bit thicker than mine. Nothing wrong with that.

I do not recommend your 9×13 pan, because the bars might be a little on the thin side.

What If I Don’t Have Parchment Paper?

It happens to the best of us. Me as well! So if you don’t have parchment paper, don’t stress. You can simply spray the pan with a bit of non-stick cooking spray. It won’t be as easily released but it can be done.

Or you can use aluminum foil with non-stick spray as well. I’ve done this and works great.

Can I use wax paper? No! Dear god, friend. No. Wax paper (as wax does) will melt. Ask me how I know 😉

More Strawberry Recipes You Might Like:

• Strawberry Pie
• Strawberry Mousse
• Strawberry Scones
• Strawberry Pound Cake

Forget going to all the trouble to make a strawberry rhubarb pie and whip up these strawberry rhubarb oatmeal bars instead. 

If you try the recipe and love it, don’t forget to leave me a comment and star rating in the comment section below! And as always…happy baking!

To Make These Strawberry Rhubarb Bars:

• 9×9 pan- This is the pan I used for this recipe!
• Measuring Cups and spoons
• Pastry Blender

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Strawberry Rhubarb Bars

An easy one bowl oatmeal crumb bar with fresh sweet strawberries and tart rhubarb.

Course Dessert

Cuisine bars

Keyword rhubarb, strawberry

Prep Time 20 minutes

Cook Time 50 minutes

Total Time 1 hour 10 minutes

Servings 12 bars

Calories 315 kcal

Author Heather Perine

Ingredients

For the crumb mixture

• 1 1/2 cups all purpose flour
• 1 1/2 cups old fashioned oats
• 3/4 cups brown sugar
• 1/3 cups granulated sugar
• 1 teaspoon salt
• 1 teaspoon baking powder
• 12 tablespoons butter cold, cut into tablespoons

For the filling

• 2 cups sliced strawberries
• 1 cup sliced rhubarb
• 1 tablespoon lemon juice
• 1 tablespoon cornstarch
• 1/4 cup sugar

Instructions

1. Pre-heat oven to 350 degrees Fahrenheit. Line a 9x9 pan with parchment paper.

2. In a large mixing bowl, whisk together the flour, oats, sugars, salt and baking powder. Using a pastry blender, cut in the butter until coarse crumbs are formed. Reserve 1 cup of the mixture and set aside.

3. Press the remaining mixture into the bottom of the 9x9 pan. Use the bottom of the measuring cup to easily press down.

4. In the same mixing bowl, stir together all the filling ingredients. Pour over the crumb mixture in the pan. Top with the remaining 1 cup crumb mixture, spread evenly around.

5. Bake for 50-60 minutes until top is golden brown and filling is bubbling. (for me this took exactly 55 minutes). Allow to cool on a wire cooling rack, then cut into bars and serve. Store covered at room temperature for up to 3 days.

Recipe Notes

• I used a 9x9 pan for this recipe, but an 8x8 pan works as well. You will just have thicker bars.
• Line your pan with parchment paper. But if you don't have that, you can spray your pan but it might not easily remove. You can also use tinfoil and spray the tinfoil with non-stick cooking spray. Just don't use wax paper! 
• If you want to freeze these bars, let them cool and remove them from the pan and then cut into bars. Freeze first on a cookie sheet, then once frozen place inside a zip-loc bag. They will keep for up to 2 months. But these bars are best the day of. My preference? With a dollop of ice-cream!

Nutrition Facts

Strawberry Rhubarb Bars

Amount Per Serving (1 g)

Calories 315 Calories from Fat 118

% Daily Value*

Total Fat 13.1g 20%

Saturated Fat 7.6g 38%

Cholesterol 31mg 10%

Sodium 280mg 12%

Dietary Fiber 3.1g 12%

Sugars 19g

Protein 4.5g 9%

* Percent Daily Values are based on a 2000 calorie diet.