Save This tangy sour cherry oat crumble bar recipe transforms simple ingredients into an irresistible treat that walks the line between dessert and snack. The buttery oat base cradles a vibrant layer of sour cherries, all topped with more golden crumble that bakes to perfection.
I first made these bars during cherry season when I was overwhelmed with a bounty from our local farmers market. After my first batch disappeared within hours at a family gathering, they've become my signature summer dessert that even the pickiest eaters request by name.
Ingredients
- All purpose flour: creates the perfect sturdy base while remaining tender
- Old fashioned rolled oats: add wonderful texture and a rustic quality
- Light brown sugar: provides depth of flavor with its molasses notes
- Unsalted butter: binds everything together with rich flavor
- Vanilla extract: enhances the buttery notes in the crumble
- Sour cherries: deliver bright tanginess that balances the sweet elements
- Cornstarch: thickens the cherry filling to the perfect consistency
- Lemon juice and zest: brighten and intensify the cherry flavor
Instructions
- Prepare the pan:
- Line your 8×8 inch baking pan with parchment paper, leaving overhang on two sides. This step is crucial for easy removal later and prevents any sticking. The overhang will serve as handles to lift the entire dessert out cleanly after cooling.
- Mix the crumble:
- Combine the dry ingredients first flour, oats, brown sugar, baking powder, and salt in a large bowl. Whisk them thoroughly to eliminate any lumps in the brown sugar. Then pour in the melted butter and vanilla, stirring with a wooden spoon until the mixture resembles wet sand that clumps together when pressed. The texture should be moist but crumbly.
- Form the base:
- Press about two thirds of your crumble mixture firmly into the prepared pan. Use the bottom of a measuring cup to create a smooth, even surface. Press firmly, especially at the edges, to ensure a solid base that will support the filling. The more compact this layer, the better your bars will hold together when cut.
- Prepare the cherry filling:
- Gently toss the pitted cherries with sugar, cornstarch, lemon juice and zest until evenly coated. The cornstarch should completely dissolve with no white patches remaining. Allow the mixture to sit for 5 minutes if using fresh cherries to begin releasing their juices.
- Assemble the layers:
- Spoon the cherry mixture evenly over the pressed crust, being careful not to disturb the base. Spread the cherries to create an even layer, reaching all corners of the pan. Then sprinkle the remaining crumble over the top, allowing some cherry filling to peek through for a rustic appearance.
- Bake to golden perfection:
- Bake in your preheated oven until the top is golden brown and you can see the cherry filling bubbling around the edges. This visual cue of bubbling is essential as it indicates the cornstarch has activated and will properly set your filling.
- Cool completely:
- Allow the bars to cool fully in the pan set on a wire rack. This cooling period is non negotiable as it allows the filling to set properly. Rushing this step will result in bars that fall apart when cut.
Save Sour cherries truly make this recipe special with their bright, tart flavor that regular sweet cherries simply cannot match. My grandmother grew sour cherry trees in her backyard, and these bars remind me of summer afternoons spent pitting cherries at her kitchen table. The slight tartness balances the buttery sweetness of the crumble in a way that keeps you coming back for just one more bite.
Storage Solutions
These cherry crumble bars maintain their best texture when stored in an airtight container at room temperature for up to 2 days. If you need longer storage, refrigerate them for up to 5 days, though the crumble will soften slightly from the humidity. For the freshest taste after refrigeration, let them come to room temperature before serving, or warm individual portions in the microwave for 15 seconds.
Seasonal Adaptations
While sour cherries create the perfect filling for these bars, the recipe works beautifully with seasonal substitutions throughout the year. In spring, try using rhubarb with a touch more sugar. Summer brings opportunities for blueberries, blackberries or peaches. Fall calls for apple or pear versions with added cinnamon and nutmeg. Even in winter, frozen berries or cranberries make excellent alternatives that bring brightness to dark days.
Serving Suggestions
Enjoy these bars on their own as a portable snack. Warm slightly and top with vanilla ice cream for an elevated dessert. Serve alongside afternoon tea or coffee for a special treat. Crumble leftover bars over yogurt for a breakfast parfait.
Troubleshooting Tips
If your cherry filling seems too watery when mixing, especially with frozen cherries, add an additional tablespoon of cornstarch. Conversely, if your cherries seem particularly dry, add a tablespoon of water to help create a jammy consistency. For the perfect crumble texture, make sure your butter is melted but not hot when mixing with the dry ingredients. If your crumble seems too dry, add a tablespoon more melted butter until it reaches a consistency that holds together when squeezed.
Save These bars offer a delightful combination of textures and flavors, making them a perfect treat for any occasion. The tangy cherries and buttery oat crumble create a truly memorable dessert experience.
Recipe FAQ
- → Can I use frozen cherries instead of fresh?
Yes, frozen sour cherries work well. Just thaw and drain them well before using to prevent excess moisture.
- → How do I store the bars to keep them fresh?
Store the bars in an airtight container at room temperature for up to 2 days, or refrigerate for up to 5 days.
- → Can I substitute sweet cherries?
Yes, you can use sweet cherries or a mix. Adjust the sugar in the filling to balance the sweetness.
- → What adds extra flavor to the crumble?
Adding a half teaspoon of ground cinnamon to the oat mixture can add extra warmth and depth of flavor.
- → Are these bars suitable for vegetarians?
Yes, the bars use butter but no animal gelatin or eggs, making them vegetarian-friendly.
- → How long should I let the bars cool before cutting?
Allow the bars to cool completely in the pan on a wire rack to ensure clean slicing and firm texture.