These Peach and Raspberry Crumble Bars are the perfect celebration of summer fruit, combining the honey-like sweetness of ripe peaches with the bright, tart pop of fresh raspberries. Nestled between a buttery, cinnamon-spiced oat crust and a golden crumble topping, these bars are an irresistible treat for any occasion.
With a jammy fruit center and a chewy, toasted oat exterior, these bars are a fantastic way to enjoy the season’s best produce in a portable, dessert-square format.
Recipe Details
- Flavor Profile: A harmonious blend of sweet peaches and tart raspberries with warm notes of cinnamon and rich, melted butter.
- Textures: A soft and jammy fruit filling sandwiched between a firm, chewy bottom crust and a crisp, crumbly topping.
- Total Time: Approximately 1 hour (15 minutes prep + 40-45 minutes bake time).
- Difficulty: Easy – requires simple mixing and layered assembly without the need for a stand mixer.
What You’ll Need
To bake these bars, you will create two main components: a vibrant fruit filling thickened with cornstarch and a versatile oat-based mixture that serves as both the bottom crust and the top crumble. The combination of granulated and brown sugars ensures the crust is perfectly sweet with a hint of molasses depth.
Ingredient Notes
- Fresh Peaches – For the best texture, use peaches that are ripe but still slightly firm. Be sure to peel them and remove the seeds before chopping to keep the filling smooth.
- Fresh Raspberries – These provide a beautiful color and a sharp tartness that balances the sweet peaches.
- Old-Fashioned Oats – These give the crust its signature chew and hearty structure. Avoid using instant oats as they will make the bars too soft.
- Cornstarch – This is a critical ingredient that binds with the fruit juices as they bake, creating a thick, jam-like consistency rather than a watery filling.
Add-ins and Substitutions
- Spices – A pinch of ground nutmeg or ginger can be added to the crust mixture to enhance the warm, autumnal flavors of the fruit.
- Zest – Adding 1 teaspoon of fresh lemon zest to the fruit filling can further brighten the raspberry notes.
- Nuts – For extra crunch, you can stir 1/2 cup of finely chopped pecans or walnuts into the crumble topping before sprinkling it over the fruit.
How to Make Peach and Raspberry Crumble Bars
The process for these bars is straightforward, involving two bowls and a single baking dish.
- Prep the Oven and Pan: Preheat your oven to 350°F. Lightly grease a 13×9-inch baking dish with non-stick cooking spray so the bars are easy to remove later.
- Prepare the Fruit Filling: In a large bowl, combine the raspberries and the chopped, peeled peaches. In a separate small bowl, whisk the sugar and cornstarch together, then sprinkle this over the fruit. Stir gently until the fruit is lightly and evenly coated.
- Mix the Crust and Crumble: In another large bowl, whisk together the flour, oats, both sugars, cinnamon, and salt. Create a well in the center of the dry ingredients and pour in the melted butter, beaten egg, and vanilla. Stir until the mixture is well combined and holds together when pressed.
- Assemble and Bake: Press two-thirds of the crust mixture firmly and evenly into the bottom of the prepared 13×9-inch dish. Spread the fruit mixture over the base. Take the remaining crust mixture and crumble it evenly over the top of the fruit. Bake for 40-45 minutes, or until the fruit is bubbling and the top crumbs have turned a light golden brown.
Pro Tip: It is absolutely essential to let the bars cool completely in the baking dish before you attempt to cut them. This allows the fruit filling to fully set and the crust to firm up, ensuring you get clean, beautiful squares.
Recipe Tips
- Peeling Peaches: If the skins are difficult to remove, you can blanch the peaches in boiling water for 30 seconds and then immediately dunk them in ice water; the skins should slip right off.
- Even Distribution: When spreading the fruit, try to make sure the raspberries and peaches are evenly mixed so every bite has a bit of both.
- Doneness Cues: Look for the fruit juices to be bubbling actively around the edges; this indicates the cornstarch has reached the temperature necessary to thicken the filling.
- Storage Tip: Because of the fresh fruit content, these bars stay freshest and maintain the best texture when stored in the refrigerator.
FAQs
Can I use frozen fruit for this recipe? While fresh is preferred for the best texture, you can use frozen fruit. Do not thaw the fruit before use, but you may need to add an extra 5-10 minutes to the baking time to account for the extra moisture.
Why are my bars falling apart? This usually happens if the bars are cut while they are still warm. The fruit filling needs to reach room temperature (or be chilled) to act as a proper binder for the crust.
Can I use quick oats instead of old-fashioned? Quick oats can be used in a pinch, but the bars will have a finer, less chewy texture. The structure may also be slightly more delicate.
Serving Suggestions
- Classic: Serve these chilled or at room temperature as a simple handheld snack.
- À La Mode: Warm a square slightly and top with a large scoop of vanilla bean ice cream for a decadent dessert.
- Breakfast Style: These bars are delicious alongside a cup of coffee or a dollop of plain Greek yogurt in the morning.
Make This Recipe in Advance
You can prepare the crust mixture and the fruit filling separately a few hours in advance, but do not assemble them until you are ready to bake to prevent the bottom crust from becoming soggy. Once baked and cooled, these bars keep beautifully in the refrigerator for up to 5 days, making them an excellent make-ahead dessert for parties or potlucks.
Print
Summer Peach and Raspberry Oat Crumble Bars
- Total Time: 60 minutes
- Yield: 24 bars 1x
- Diet: Vegetarian
Description
A celebration of summer fruit, combining the honey-like sweetness of ripe peaches with the bright, tart pop of fresh raspberries. These bars feature a buttery, cinnamon-spiced oat crust and a golden crumble topping for an irresistible jammy treat.
Ingredients
Fruit Filling
- 3 cups fresh raspberries, 3 cups fresh peaches (peeled/chopped)
- 3/4 cup granulated sugar, 2 tbsp cornstarch
Crust & Crumble Mixture
- 2 cups all-purpose flour, 1 cup old-fashioned oats
- 1/2 cup granulated sugar, 1/2 cup light brown sugar
- 1 tsp cinnamon, 1/4 tsp kosher salt
- 1 cup unsalted butter (melted), 1 egg (beaten), 1 tsp vanilla
Instructions
Filling: Gently toss raspberries and peaches. Whisk 3/4 cup sugar and cornstarch together; stir into the fruit to coat.
Dough: Whisk flour, oats, both sugars, cinnamon, and salt. Add melted butter, egg, and vanilla; stir until the mixture holds together when pressed.
Assemble: Press 2/3 of the oat dough into a greased 13×9-inch dish. Spread fruit evenly on top. Crumble the remaining dough over the fruit.
Bake: Bake at 350°F for 40–45 mins until juices are bubbling and topping is golden brown.
Set: Cool completely in the pan before slicing to allow the filling to set for clean cuts.
Notes
Oat Choice: Use old-fashioned oats for structural integrity; quick oats will yield a mushy texture.
Cornstarch is Key: This acts as the binder for the juices; omitting it will result in watery bars that won’t hold their shape.
Peeling Hack: Blanch peaches in boiling water for 30 seconds then move to an ice bath to make skins slip off easily.
Storage: Store in the refrigerator for up to 5 days to maintain the freshness of the fruit.
- Prep Time: 15 minutes
- Cook Time: 45 minutes
- Category: Dessert / Bars
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 bar
- Calories: 215
- Sugar: 18
- Sodium: 45
- Fat: 9
- Saturated Fat: 5
- Unsaturated Fat: 4
- Trans Fat: 0
- Carbohydrates: 32
- Fiber: 2
- Protein: 3
- Cholesterol: 28
Keywords: peach raspberry crumble bars, summer fruit dessert, oat crumble squares, fresh peach recipes, raspberry dessert bars
