Peach Pie Bars

These buttery, brown-sugar-packed Peach Pie Bars combine a jammy peach filling with a crisp oatmeal crumble crust that holds its shape beautifully.

Why This Recipe Works:

• Pre-baking the bottom crust creates a solid barrier that prevents the peach juices from making the base soggy.
• Oatmeal in the crust absorbs excess moisture while adding a nutty, toasted flavor.
• Cornstarch gelatinizes at high temperatures, turning the peach juices into a thick, sliceable jam.

I still remember the humid July afternoon I tried to slice my first warm peach pie. The entire middle slid out onto the counter in a sad, sugary puddle.

It was delicious, but a total disaster.

My hands were sticky and my ego was bruised. The kitchen smelled like burnt sugar for three days.

Think about this in terms of physics: peaches are basically water balloons wrapped in fuzzy skin. When they hit the oven, that water expands and floods the pan, which is why cheap, thin aluminum baking pans fail every single test because they warp and scorch the bottom crust before the starch can gelatinize.

Bear with me here, because the solution is incredibly simple. By using a dual-purpose oatmeal crust that acts as both the base and the crumble topping, we create a sturdy foundation that clings to the jammy filling.

No fancy equipment is needed.

Peach Pie Bars

• Publisher Storied Skillet
• Cuisine American
• Category Dessert, Baking
• Prep Time 20 mins
• Cook Time 45 mins
• Servings 16
• Calories 210 calories
• Rating 4.8 516
• Tags peach pie bars, peach cobbler bars, oatmeal crumble, summer dessert

Ingredients

• 1 cup (225g) unsalted butter, melted
• 1 cup (200g) packed light brown sugar
• 2 cups (250g) all-purpose flour
• 1.5 cups (135g) rolled oats
• 1 tsp baking powder
• 0.5 tsp Diamond Crystal kosher salt
• 4 cups fresh peaches, peeled and sliced
• 0.25 cup (50g) granulated sugar
• 1 tbsp lemon juice
• 2 tsp cornstarch
• 0.5 tsp ground cinnamon

Directions

1. Preheat your oven to 350°F (175°C) and line a 9x13-inch baking pan with parchment paper, leaving an overhang on the sides.
2. In a large bowl, whisk together the melted butter and brown sugar until smooth and fully combined.
3. Stir in the flour, rolled oats, baking powder, and kosher salt until a clumpy dough forms.
4. Press about two-thirds of this oat mixture firmly into the bottom of your prepared pan using the heel of your hand until your palm aches slightly.
5. Bake the crust for 12 minutes until it is lightly golden, then remove it from the oven and let it cool slightly.
6. While the crust bakes, toss the sliced peaches with the granulated sugar, lemon juice, cornstarch, and cinnamon in a medium bowl.
7. Arrange the peach slices evenly over the pre-baked crust, ensuring they lie relatively flat.
8. Crumble the remaining oat mixture evenly over the top of the peaches, pressing lightly to adhere.
9. Bake for 30 to 35 minutes, or until the top is golden brown and the peach filling is bubbling at the edges.
10. Let the bars cool completely in the pan before using the parchment overhang to lift them out and slice.

Notes

• I highly recommend using Diamond Crystal kosher salt; if you only have fine table salt, cut the measurement in half (to 1/4 teaspoon) to avoid an overly salty crust.
• Cornstarch is essential here because it acts as a thickener through starch gelatinization, binding the free water released by the peaches as they heat up.
• Keep a close eye on the oven during the last 10 minutes of baking; the brown sugar in the crumble topping can transition from perfectly caramelized to bitter and burnt very quickly.
• After a day in the fridge, the crust actually softens slightly and absorbs some of the peach moisture, making the bars taste remarkably like a traditional crustless peach custard pie.
• After a year of washing my favorite Nordic Ware pan, it still releases these bars cleanly without sticking, proving that quality bakeware is worth the investment.

Serving Suggestions

These bars are incredibly versatile and can be served warm, at room temperature, or chilled straight from the fridge.

• Top with a generous scoop of homemade peach ice cream for a double-dose of summer flavor.
• Drizzle with warm salted caramel sauce right before serving to enhance the brown sugar notes.
• Serve alongside a fresh peach burrata salad at your next backyard barbecue.
• Dust lightly with powdered sugar through a fine-mesh sieve for a bakery-style finish.

Storage and Reheating

Store any leftover bars in an airtight container in the refrigerator for up to five days.

The cold temperature actually helps the fruit filling set even further, making them much easier to slice cleanly. I actually prefer eating them cold straight from the fridge on a hot morning.

They freeze beautifully too.

Wrap individual bars tightly in plastic wrap, place them in a freezer bag, and freeze for up to three months. Thaw them overnight in the fridge before reheating.

To reheat, pop a bar into the oven at 350°F for about eight minutes to crisp up the oat topping. Avoid the microwave unless you want a soft, cobbler-like texture.

Ingredient Substitutes

If you need to adapt this recipe based on what is in your pantry, here are some easy swaps:

1. Peaches: You can easily swap fresh peaches for frozen ones (thawed and drained), or try a mix of berries like in this strawberry peach crisp.
2. Rolled Oats: Quick oats can work in a pinch, but avoid steel-cut oats as they will remain too hard and gritty after baking.
3. Flour: A 1:1 gluten-free baking flour blend can replace the all-purpose flour without ruining the structural integrity of the crust.
4. Brown Sugar: If you run out of brown sugar, you can use white granulated sugar mixed with a tablespoon of molasses, or try the caramelized depth of brown sugar baked peaches.

These bars have officially replaced pie in my summer baking rotation, and I think they will do the same for you. Let me know if you try them, and happy baking!