Strawberry Rhubarb Oatmeal Bars

There is nothing quite like the fragrant aroma of sweet berries and tart rhubarb bubbling away under a golden, crispy oat crumble.

Welcome to your new favorite spring and summer baking obsession. These Strawberry Rhubarb Oatmeal Bars combine the jammy perfection of fresh fruit with a buttery, crispy crust. Consequently, you will find yourself making Strawberry Rhubarb Oatmeal Bars for every picnic, potluck, and weekend brunch on your calendar. Furthermore, the brilliant balance of sweet and tart flavors makes these Strawberry Rhubarb Oatmeal Bars completely irresistible to anyone who tries them.

When we start craving fresh baked treats, these Strawberry Rhubarb Oatmeal Bars always come to mind first. Additionally, they offer a comforting, hearty texture that reminds me of our favorite Healthy Breakfast Cookies. You will love how easily Strawberry Rhubarb Oatmeal Bars come together with simple pantry staples and vibrant seasonal produce. Meanwhile, the bright pop of lemon juice enhances the fruit filling, ensuring every bite tastes incredibly fresh.

I still remember the first time I baked these for a neighborhood barbecue. As a result, the entire pan disappeared within minutes, leaving everyone asking for the recipe. Since then, baking them has become a beloved seasonal tradition in our kitchen. You will surely build your own wonderful memories around this delightful dessert.

What You Need for Strawberry Rhubarb Oatmeal Bars

Gathering the right components is the secret to achieving the perfect texture in your Strawberry Rhubarb Oatmeal Bars. Furthermore, using fresh, high-quality produce will make the fruit filling absolutely sing with flavor. Because these Strawberry Rhubarb Oatmeal Bars rely on simple pantry staples, you likely have most of the dry goods in your kitchen already. As a result, you can whip up this magnificent treat whenever the craving strikes.

All-purpose flour: This provides the essential structural framework for the crumbly base and topping.

Quick oats: Quick oats bind the mixture together while lending a comforting, chewy texture to the crust.

Baking powder: This crucial leavening agent adds just enough lift to keep the crust from becoming overly dense.

Cinnamon and salt: These flavor enhancers add warmth and balance the sweetness of the fruit.

Brown sugar: The molasses content in brown sugar contributes a deep, caramel-like sweetness and retains moisture.

Melted butter: Butter coats the flour and oats, inhibiting gluten formation for a tender, shortbread-like bite.

Large egg: The proteins in the egg act as a binder, ensuring the crust holds together beautifully when sliced.

Maple syrup: This natural sweetener adds complex earthy notes that pair beautifully with the tart fruit.

Fresh strawberries and rhubarb: The high pectin content in strawberries combined with the sharp acidity of rhubarb creates a complex, perfectly balanced jammy filling.

Granulated sugar: Sugar macerates the fruit, drawing out its natural juices while sweetening the tart rhubarb.

Lemon juice: A splash of citrus brightens the filling and helps activate the natural fruit pectins.

Corn starch: This powerful thickening agent gels the fruit juices as they boil, preventing a soggy crust.

Before you begin mixing, take a moment to measure out all your ingredients carefully. Consequently, having your mise en place ready ensures the Strawberry Rhubarb Oatmeal Bars assemble quickly and efficiently. Moreover, chopping your rhubarb into uniform half-inch pieces guarantees an even bake and consistent texture. Therefore, your preparation will pay off with a perfectly executed dessert.

How to Make Strawberry Rhubarb Oatmeal Bars

Creating these incredible Strawberry Rhubarb Oatmeal Bars is a straightforward process that yields spectacular results. Furthermore, the simple method of using the same mixture for both the crust and the topping saves you valuable time. Read through the steps completely before starting so you understand the flow of the recipe. Ultimately, you will be rewarded with a bubbling, golden pan of fruity perfection.

Step 1: Prepare the Pan and Oven

First, preheat your oven to 350 degrees Fahrenheit to ensure it is thoroughly heated before baking begins. Next, carefully line a metal 8×8 inch baking pan with high-quality parchment paper. Furthermore, leave two sides overhanging so you can easily lift the finished bars out later. Finally, this crucial step prevents sticky fruit from adhering to the pan and guarantees clean, beautiful slices.

Step 2: Mix the Dry Base Ingredients

In a large mixing bowl, whisk together the all-purpose flour, quick oats, baking powder, cinnamon, and kosher salt. Consequently, this distributes the leavening agent evenly throughout the mixture to ensure a uniform bake. Additionally, add the brown sugar, breaking up any large clumps with your fingers to prevent hard caramel spots. The warm scent of cinnamon mixed with the earthy oats will immediately make your kitchen smell wonderful.

Step 3: Add the Wet Binders

Pour the melted butter, maple syrup, and beaten egg into the dry ingredients. Then, use a sturdy spatula to stir everything until the mixture resembles coarse, wet sand. As a result, the oats will absorb the moisture, creating a cohesive dough. Make sure no dry flour spots remain at the bottom of the bowl.

Step 4: Press the Crust

Take one and a half cups of the oat mixture and transfer it into your prepared baking pan. Using the back of a spoon or your hands, press it firmly and evenly into the bottom. Meanwhile, reserve the remaining half cup of the mixture to use as your crumbly topping. A tightly packed crust prevents the fruit juices from seeping underneath.

Step 5: Enhance the Topping

To the reserved half cup of dough, add one tablespoon each of melted butter, maple syrup, brown sugar, and flour. Furthermore, toss in three to four tablespoons of extra quick oats and a pinch of salt. Stir this together until it forms large, buttery clumps. Consequently, this creates a distinct, delightfully crispy streusel layer on top.

Step 6: Prepare the Fruit Filling

In a separate mixing bowl, combine your freshly diced strawberries and rhubarb. Pour the tablespoon of lemon juice over the fruit and gently toss to coat everything evenly. The acidity of the lemon juice immediately begins to draw out the natural flavors. You will notice the vibrant red and green colors glistening beautifully.

Step 7: Thicken the Fruit

In a small dish, thoroughly whisk together the granulated sugar and cornstarch until no lumps remain. Next, sprinkle this fine powder over the fruit mixture and stir gently until the fruit is completely coated. As a result, the cornstarch will combine with the fruit juices during baking to form a thick, jammy consistency. It is essential to do this just before assembling.

Step 8: Assemble and Bake

Pour the coated fruit filling directly over the pressed oat crust, spreading it into an even layer. Then, scatter your reserved crumble topping generously over the fruit, leaving small peaks of fruit exposed. Bake for 20 to 25 minutes, or until the topping is golden brown and the filling bubbles enthusiastically. Ultimately, the sweet aroma will be absolutely intoxicating.

These Strawberry Rhubarb Oatmeal Bars offer some wonderful nutritional benefits alongside their phenomenal taste. For instance, strawberries provide vitamin C, which supports a healthy immune system and bright skin. Furthermore, oats are an excellent source of dietary fiber, promoting steady digestion and lasting energy. When preparing fresh produce for these Strawberry Rhubarb Oatmeal Bars, always follow proper food safety guidelines to ensure your family’s health.

Store any leftover Strawberry Rhubarb Oatmeal Bars in an airtight container in the refrigerator for up to five days. Alternatively, you can freeze the sliced Strawberry Rhubarb Oatmeal Bars for up to three months for a quick, sweet treat.

When it comes time to serve these Strawberry Rhubarb Oatmeal Bars, a scoop of vanilla bean ice cream takes them to the next level. Additionally, they pair exceptionally well with a hot cup of coffee or alongside our Irresistible Cookie Recipes at an afternoon tea. Whether you pack these Strawberry Rhubarb Oatmeal Bars for a picnic or enjoy them as a midnight snack, they always satisfy. For another fantastic dessert option, explore our collection to find your next baking project.

There you have it, the ultimate method for creating spectacular Strawberry Rhubarb Oatmeal Bars from scratch. Furthermore, once you master this straightforward technique, you will want to bake Strawberry Rhubarb Oatmeal Bars all season long. The phenomenal combination of sweet berries, tart rhubarb, and buttery oats makes every single bite completely unforgettable. Therefore, we highly encourage you to share these Strawberry Rhubarb Oatmeal Bars with your loved ones at your next gathering.

We are confident these Strawberry Rhubarb Oatmeal Bars will become a requested favorite in your household. Be sure to let us know how your batch of Strawberry Rhubarb Oatmeal Bars turns out!

Have you tried this recipe? Drop your experience in the comments below!

Strawberry Rhubarb Oatmeal Bars

These easy strawberry rhubarb oatmeal bars feature a jammy fruit filling sandwiched between a buttery, crispy oat crust and crumble topping.

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 25 minutes mins

Total Time 45 minutes mins

Servings: 16 bars

Course: Dessert, Snack

Cuisine: American

Calories: 165

Ingredients Method Notes

Ingredients

  

• 1 cup all-purpose flour (130 grams)
• 1 ⅔ cup quick oats (140 grams)
• 1 teaspoon baking powder
• 1 teaspoon cinnamon
• ¼ teaspoon salt
• ½ cup brown sugar (100 grams)
• 1 large egg
• ⅓ cup melted butter (70 grams)
• ¼ cup maple syrup (80 grams)
• 2 cups diced strawberries (283 grams)
• 1 ½ cups diced rhubarb (200 grams)
• ⅓ cup granulated sugar (67 grams)
• 1 tablespoon lemon juice
• 1 tablespoon corn starch

Method

 

1. Preheat oven to 350F and line a metal 8x8 inch baking pan with parchment paper.
2. In a large bowl, whisk together the flour, oats, baking powder, cinnamon, and salt.
3. Stir the brown sugar into the dry ingredients to combine.
4. Pour in the melted butter, maple syrup, and beaten egg, stirring until mixed.
5. Press one and a half cups of the oat mixture evenly into the bottom of the prepared pan.
6. Reserve the remaining half cup of the mixture in a small bowl for the topping.
7. Add one tablespoon each of melted butter, maple syrup, brown sugar, and flour to the reserved topping.
8. Mix three to four tablespoons of quick oats and a pinch of salt into the topping until crumbly.
9. In a separate bowl, toss the diced strawberries and rhubarb with the lemon juice.
10. Whisk the granulated sugar and cornstarch together, then toss with the fruit to coat.
11. Pour the fruit filling over the pressed crust and spread it evenly.
12. Sprinkle the crumbly oat topping over the fruit layer.
13. Bake for 20 to 25 minutes until the topping is browned and the filling is bubbly.
14. Cool completely in the pan before slicing into squares.

Notes

Allow the bars to cool completely in the pan before slicing to ensure clean, sharp edges. Toss the fruit with the cornstarch mixture right before baking to prevent the filling from becoming too watery.