Peach Crumble Bars with Buttery Streusel Topping

These Peach Crumb Bars combine a juicy peach filling, a buttery shortbread crust, and a crunchy oat crumble topping. A simple vanilla glaze finishes them off for a bright, summery dessert. Use ripe fresh peaches when they are in season or reach for frozen peaches any time of year. Serve warm with a scoop of vanilla ice cream or fresh whipped cream for an extra-special treat.

Peach Pie Crumb Bars Recipe

Peach Crumb Bars are an easy, crowd-pleasing way to showcase summer peaches. Layers of buttery shortbread, a cinnamon-spiced peach filling, and an oat crumble bake together into bars that slice neatly and travel well—perfect for picnics, potlucks, or a weekend dessert.

The crust bakes to a light golden color, the peach layer stays juicy but set thanks to cornstarch, and the oat crumble offers a satisfying crunch. These bars are make-ahead friendly and just as delicious the next day after chilling briefly in the fridge.

No fresh peaches? Frozen peaches work wonderfully—use them straight from the freezer and add a little extra cornstarch if they look especially juicy.

Why You’ll Love These Peach Bars

These bars deliver all the flavor of peach pie with less fuss. They bake in a single pan and are easy to slice into uniform squares for serving. Key highlights:

• Fruit-forward: A generous layer of peaches ensures every bite tastes of fresh fruit.
• Layered texture: Shortbread crust, tender fruit, and crunchy oat crumble balance sweetness and texture.
• One-pan convenience: Bake and serve from the same pan for easy cleanup and transport.
• Versatile: Swap some peaches for nectarines, apricots, or berries for variation.
• Make-ahead friendly: Prepare in advance and add the glaze just before serving for the best appearance.

How To Make Peach Crumb Bars

The bars are assembled in three layers: the shortbread crust, the peach filling, and the oat crumble. Bake until the topping is golden and the filling is bubbling at the edges, then cool completely before glazing and slicing so the filling sets.

Shortbread Crust

1. Preheat the oven to 350°F (180°C) and line a 9×9-inch baking pan with parchment paper, leaving an overhang on two sides for easy removal.
2. Stir together melted butter, granulated sugar, and vanilla extract.
3. Add flour and salt and mix until a soft dough forms.
4. Press dough evenly into the prepared pan and bake 15 minutes, until the edges are light golden.

Peach Filling

5. In a large bowl combine diced peaches, light brown sugar, granulated sugar, cornstarch, cinnamon, and vanilla.
6. Toss gently until the peaches are evenly coated.
7. Spread the peach mixture over the warm crust in an even layer.

Crumble Topping

8. In a bowl combine old-fashioned oats, flour, packed light brown sugar, cinnamon, and salt. Pour in melted butter.
9. Stir until large crumbly clusters form.
10. Sprinkle crumble evenly over the peach layer, pressing some clusters lightly for extra crunch if desired.
11. Bake at 350°F for 30–35 minutes or until the topping is golden brown and the peach filling bubbles at the edges.

Vanilla Glaze

12. Whisk powdered sugar, milk, and vanilla until smooth. Add a bit more milk if you prefer a thinner drizzle. Drizzle over cooled bars, then slice into squares.

Storage Information

If you have leftovers, here are the best ways to store them:

• Room temperature: Store in an airtight container for up to 2 days.
• Refrigerator: Store in an airtight container for up to 5 days; place parchment between layers to protect the crumble and glaze.
• Freezer: Omit the glaze, wrap cooled bars individually in plastic wrap, place in a freezer-safe bag or container, and freeze up to 3 months. Thaw overnight in the refrigerator, bring to room temperature, then add glaze.
• Make ahead: Bake and cool completely, then refrigerate. Add glaze shortly before serving for best texture and appearance.

Variations To Try

Change the fruit or flavors to suit your taste:

• Substitute one cup of peaches with fresh blueberries, raspberries, or blackberries for a mixed-berry twist.
• Use almond extract in the glaze in place of vanilla for a nutty note—use sparingly as it’s strong.
• Stir chopped pecans or walnuts into the crumble for extra crunch.
• Try nectarines, plums, or apricots either alone or in combination with peaches.
• Add a pinch of nutmeg, ginger, or cardamom to the peach filling for deeper warmth.
• Dust cooled bars with powdered sugar for a simple finish, or warm individual squares and serve with ice cream.

Questions & Tips

Do I need to peel the peaches?

Peeling gives a softer, more uniform filling, but peach skins are edible. Leave them on for a rustic texture or to save time.

Can I use frozen or canned peaches?

Frozen peaches are fine and recommended over canned. Use them frozen and adjust cornstarch if the filling seems very juicy. Avoid canned peaches for best texture and flavor.

How do I know when the bars are done?

The oat topping should be golden and the filling should bubble at the edges—this bubbling shows the cornstarch has thickened the juices.

Can I double this recipe?

Yes. Use a 9×13-inch baking pan and monitor baking time; you may need a few extra minutes until the topping is golden and the filling bubbles.

Baker’s Tips

• Choose peaches that are ripe but still slightly firm so they hold their shape during baking.
• If peaches are very juicy, add an extra teaspoon or two of cornstarch to prevent a runny filling.
• Cool the bars completely before slicing so the filling sets and slices cleanly.
• Dice the peaches evenly so they cook uniformly.
• Press the crust firmly into the pan and line the pan with parchment that overhangs for easy removal.
• For larger crumble clusters, press portions of the topping together before sprinkling over the fruit.

Ingredients

Crust

• 1 cup unsalted butter, melted
• 1/2 cup granulated sugar
• 2 teaspoons vanilla extract
• 2 1/2 cups all-purpose flour
• 1/4 teaspoon salt

Peach Filling

• 5 cups diced peaches (about 5–6 medium), peeled if desired
• 1/3 cup light brown sugar
• 2 tablespoons granulated sugar
• 2 tablespoons cornstarch
• 1 teaspoon ground cinnamon
• 1 teaspoon vanilla extract

Oat Crumble

• 3/4 cup old-fashioned oats
• 3/4 cup all-purpose flour
• 1/2 cup packed light brown sugar
• 1/2 teaspoon ground cinnamon
• 1/4 teaspoon salt
• 6 tablespoons unsalted butter, melted

Vanilla Glaze

• 1 cup powdered sugar
• 2 tablespoons milk (adjust as needed)
• 1/2 teaspoon vanilla extract

Instructions

For the crust

1. Preheat oven to 350°F (180°C). Line a 9-inch square baking pan with parchment paper, leaving an overhang for easy removal.
2. In a large bowl, mix melted butter, sugar, and vanilla until combined.
3. Add flour and salt and stir until a soft dough forms. Press the dough evenly into the prepared pan.
4. Bake 15 minutes, until edges are lightly golden.

For the peach filling

1. While the crust bakes, combine peaches, brown sugar, granulated sugar, cornstarch, cinnamon, and vanilla in a large bowl. Toss gently to coat.
2. Spread the peach mixture evenly over the warm crust.

For the crumble

1. In a bowl, stir oats, flour, brown sugar, cinnamon, and salt. Pour in melted butter and stir until large clusters form.
2. Sprinkle the crumble over the peach layer. Bake 30–35 minutes, until the topping is golden and the peach filling bubbles at the edges.
3. Allow the bars to cool completely in the pan before lifting them out using the parchment overhang.

For the glaze

1. Whisk powdered sugar, milk, and vanilla until smooth, adding more milk if needed. Drizzle over cooled bars and slice into squares.

Nutrition (per serving, approximate)

Calories: 377 kcal | Carbohydrates: 55 g | Protein: 4 g | Fat: 16 g