Peach Blackberry Galette

Juicy peaches and tart blackberries tucked into a flaky, buttery crust are the kind of dessert that disappears fast, even when it looks rustic and unfussy. The filling turns jammy…

By Willow • July 27, 2026 • Reading time: 10 min

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Juicy peaches and tart blackberries tucked into a flaky, buttery crust are the kind of dessert that disappears fast, even when it looks rustic and unfussy. The filling turns jammy in the oven, the edges of the crust bake up deep golden and crisp, and every slice holds together just enough to feel elegant without losing that homemade look.

What makes this galette work is the balance between structure and ease. The fruit gets a little cornstarch so it doesn’t flood the crust, the lemon brightens the peaches, and the cold butter in the dough stays in distinct pieces long enough to create those tender, flaky layers. If the butter melts before baking, you lose that texture, so keeping everything cold pays off in the final bite.

Below, you’ll find the one crust trick that matters most, the best way to fold the dough without tearing it, and a few swaps for when your fruit isn’t exactly what the recipe calls for.

The Reason Most Galettes Leak: Warm Butter and Wet Fruit

Most galettes fail in the same two places: the dough gets too warm before it hits the oven, or the fruit dumps too much juice into the center before the crust has a chance to set. Cold butter is what gives you those flaky layers, and cornstarch is what turns the peach-blackberry juices into a thick, spoonable filling instead of a puddle. If the dough starts feeling soft while you’re assembling, stop and chill it for 10 to 15 minutes. That small pause saves the shape and the texture.

The other mistake is overloading the fruit. Peaches vary a lot in juiciness, so if yours are extra ripe, let the sliced fruit sit with the sugar for a few minutes, then spoon off a little of the liquid before you pile it onto the dough. You still get a glossy, jammy filling, just not one that breaks through the bottom crust.

What Each Ingredient Is Actually Doing in This Galette

• All-purpose flour — Gives the crust enough structure to hold the fruit, but still keeps it tender. A low-protein pastry flour works too, but the dough may be a little more delicate to roll.
• Cold unsalted butter — This is where the flakiness comes from. Use it straight from the fridge and stop cutting it in when the pieces are about pea-sized; fully blending it into the flour turns the crust sandy instead of flaky.
• Ice water — Just enough to bring the dough together. Add it slowly, because too much water makes the crust tough and too little leaves you with dry cracks that won’t roll out cleanly.
• Peaches and blackberries — The peaches bring sweetness and body, while the blackberries add tart juice and color. If your peaches aren’t super fragrant, let them sit with the sugar a bit longer so they soften and release some flavor before baking.
• Cornstarch — This thickens the fruit juices as the galette bakes. Arrowroot can work in its place, but don’t skip a thickener entirely unless you want a looser filling.
• Lemon zest and juice — The zest lifts the fruit and the juice keeps the peaches from tasting flat. You want both; the zest gives aroma, but the juice sharpens the filling after baking.
• Coarse sugar — Adds crunch and a little sparkle on the crust. It’s a finishing detail, but it’s worth using because it gives the rim that bakery-style bite.

Building the Fold So the Center Stays Open and the Edges Stay Crisp

Mixing the Dough Without Warming It

Whisk the flour, sugar, and salt together first, then cut in the butter until the mixture looks like rough crumbs with some larger pieces still visible. Those bigger bits matter; they melt in the oven and leave pockets behind, which is what gives the crust lift. Add the ice water one tablespoon at a time and stop the second the dough clumps when you squeeze it. If it feels sticky, you’ve gone too far.

Chilling for Clean Rolling

Shape the dough into a disk before it goes into the fridge. A flat disk chills evenly and rolls without fighting you later. After at least an hour, the butter should be firm again and the dough should feel cool to the touch. If it springs back hard when you roll it, let it sit at room temperature for 5 minutes, then try again.

Filling and Folding the Galette

Roll the dough into a 12-inch circle and move it to parchment before adding the fruit. Keep the filling in the center and leave a good 2-inch border so you have enough dough to fold over without stretching. Fold the edges over the fruit in sections, overlapping a little as you go. If the dough cracks, patch it with a scrap and press lightly; rustic is the point, and a patched edge bakes up just fine.

Baking Until the Juices Thicken

Brush the crust with beaten egg, then sprinkle on the coarse sugar. Bake until the crust is deep golden brown and the fruit is bubbling in the center, not just around the edges. The bubbling matters because it tells you the cornstarch has activated and the filling has thickened. If you pull it too early, the fruit stays loose once it cools.

Three Good Ways to Adjust This Galette Without Losing What Makes It Work

Questions I Get Asked About This Peach Blackberry Galette

Peach Blackberry Galette

Peach blackberry galette with a flaky, buttery crust and jammy fruit filling. Sliced peaches and fresh blackberries bake until bubbling while the edges turn deep golden brown.

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Prep Time 20 minutes mins

Cook Time 45 minutes mins

chilling 1 hour hr

Total Time 2 hours hrs 5 minutes mins

Servings: 6 servings

Course: Dessert

Cuisine: American

Calories: 420

Ingredients Equipment Method Notes

Ingredients

  

For the crust

• 1.25 cup all-purpose flour
• 1 tbsp granulated sugar
• 0.5 tsp salt
• 0.5 cup cold unsalted butter, cubed
• 3 tbsp ice water use 3–4 tbsp as needed

For the filling

• 3 medium ripe peaches, sliced
• 1 cup fresh blackberries
• 0.333 cup granulated sugar
• 1 tbsp brown sugar
• 2 tbsp cornstarch
• 1 tsp vanilla extract
• 1 tsp lemon zest
• 1 tbsp fresh lemon juice
• 0.5 tsp ground cinnamon
• 1 pinch salt

For finishing

• 1 egg, beaten
• 1 tbsp coarse sugar
• 1 tbsp melted butter (optional)

Equipment

• 1 sheet pan

Method

 

Make the crust

1. Whisk together all-purpose flour, granulated sugar, and salt in a bowl until evenly combined.
2. Cut in the cold butter until the mixture resembles coarse crumbs.
3. Add ice water one tablespoon at a time and stir just until the dough comes together.
4. Shape the dough into a disk, wrap it, and refrigerate for at least 1 hour until firm.

Make the filling

1. Preheat the oven to 400°F and line a sheet pan with parchment paper.
2. In a large bowl, combine sliced peaches, fresh blackberries, granulated sugar, brown sugar, cornstarch, vanilla extract, lemon zest, fresh lemon juice, ground cinnamon, and salt.
3. Toss gently until the fruit is evenly coated and glossy.

Assemble and bake

1. Roll the chilled dough into a 12-inch circle and transfer it to the prepared baking sheet.
2. Arrange the fruit filling in the center, leaving a 2-inch border, and fold the edges over the fruit, overlapping slightly to form a rustic shape.
3. Brush the crust with the beaten egg, then sprinkle with coarse sugar and drizzle melted butter over the fruit if desired.
4. Bake for 40–45 minutes at 400°F until the crust is deep golden brown and the fruit filling is bubbling and slightly thickened.

Cool and serve

1. Cool the galette for 15 minutes before slicing so the filling thickens slightly.
2. Serve warm or at room temperature with vanilla ice cream or whipped cream.

Notes

For the flakiest crust, keep the butter very cold and stop adding ice water as soon as the dough holds together. Refrigerate leftovers in an airtight container up to 3 days; reheat at 350°F for 10–15 minutes to re-crisp the edges. Freezing: no—fruit galettes tend to soften after thawing. For a fruit-forward swap, use nectarines instead of peaches (slice thickness the same) for a slightly firmer texture and different flavor.