Sourdough Blackberry Galette – A Rustic Summer Dessert to Impress

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The sourdough blackberry galette is a rustic, effortless pastry that captures the essence of summer. With flaky, buttery crust infused with the tangy depth of sourdough starter and a juicy filling of ripe blackberries, this dessert brings together comfort and elegance in one bite. In this article, you’ll discover its background and why it’s the perfect late-summer bake. We’ll cover everything from essential ingredients and step-by-step preparation to expert tips for achieving that golden crust. You’ll also find variations, serving suggestions, and storage advice to help your homemade galette look—and taste—picture-perfect every time.

Sourdough Blackberry Galette – A Rustic Summer Dessert to Impress

Why Sourdough Blackberry Galette Is the Perfect Rustic Dessert

A Late-Summer Baking Tradition

Every late summer, when blackberry hedges overflow with glossy fruit, I’m reminded of my first attempt at a sourdough blackberry galette. After an afternoon of berry picking with stained fingers and full baskets, there’s nothing more satisfying than transforming that harvest into a warm, bubbling dessert. The beauty of the sourdough blackberry galette lies in its simplicity—no pie tins, no intricate lattices. Just crisp pastry folded naturally over glistening fruit, baked until the kitchen fills with an aroma that feels both nostalgic and comforting.

What makes it even more special is the use of sourdough starter. Instead of traditional pie crust, the subtle tang of fermented dough adds character and complexity. It bridges the tartness of fresh berries with the sweetness of sugar, creating a flavor that feels grounded and wholesome. Rustic baking like this invites imperfection; uneven folds and escaped juices only enhance its charm. Baking a sourdough blackberry galette isn’t just about a dessert—it’s about slowing down, honoring seasonal fruit, and celebrating the pleasure of homemade comfort food.

The smell that wafts from the oven—warm butter mingling with ferment and fruit—summons memories of long, sunny days and cozy kitchen moments. Whether shared at a picnic or enjoyed by candlelight, the sourdough blackberry galette is a small ritual that marks the gentle close of summer.

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Rustic sourdough blackberry galette topped with juicy blackberries and golden flaky crust on a wooden table.

Sourdough Blackberry Galette


  • Total Time: 1 hour 10 minutes
  • Yield: 8 servings 1x

Description

A rustic, free-form pastry featuring a tangy sourdough crust folded around juicy summer blackberries for a simple yet impressive dessert.


Ingredients

Scale
  • 1 1/4 cups all-purpose flour
  • 1/2 cup cold unsalted butter, cubed
  • 1/4 teaspoon fine sea salt
  • 1/2 cup active sourdough starter
  • 1 to 2 tablespoons cold water
  • 2 1/2 cups fresh blackberries
  • 1/4 cup granulated sugar
  • 1 tablespoon cornstarch
  • 1 tablespoon lemon juice
  • 1/2 teaspoon vanilla extract
  • 1 egg, beaten
  • 1 tablespoon coarse sugar
  • optional lemon zest or honey drizzle

  • Instructions

    1. Whisk together flour and salt in a mixing bowl

    2. Cut cold butter into the flour mixture until coarse crumbs form

    3. Add sourdough starter and mix, adding cold water as needed until dough comes together

    4. Shape dough into a ball, wrap and chill in the refrigerator for at least 30 minutes

    5. Roll chilled dough into a 12-inch circle on parchment paper

    6. Mix blackberries, sugar, cornstarch, lemon juice, and vanilla extract; spoon onto dough leaving a 2-inch border

    7. Fold dough edges over the filling, overlapping folds to form a rustic crust

    8. Brush crust with beaten egg and sprinkle with coarse sugar

    9. Transfer galette on parchment to a baking sheet and bake at 400°F (200°C) for 35 to 40 minutes until golden and bubbling

    10. Let galette cool for 15 minutes before slicing and serving with whipped cream or ice cream

    • Prep Time: 30 minutes
    • Cook Time: 40 minutes
    • Category: dessert
    • Method: baking
    • Cuisine: american

    Nutrition

    • Serving Size: 1 slice

    Keywords: sourdough, blackberry, galette, rustic dessert, summer dessert, pastry, fruit tart, easy baking, homemade

    What Makes a Galette Different from Other Summer Desserts

    Galettes capture everything beautiful about rustic pastry without the fuss of traditional pies or tarts. A galette is free-form, made from a single crust rolled out and folded casually around the filling. There’s no need for a precisely fitted pan or perfect edges. Instead, its irregular folds and golden bubbles epitomize homestyle charm.

    What sets a sourdough blackberry galette apart is how the sourdough adds gentle acidity to the rich, buttery crust. This slight tang offsets the sweetness of the blackberries, creating a balanced flavor profile that’s light yet deeply satisfying. Compared to dense crumbles or structured tarts, galettes are simpler to assemble but deliver the same level of visual appeal—especially when baked to a golden hue and served with a touch of cream.

    Because it’s less structured, a galette is ideal for relaxed gatherings: think backyard dinners, family picnics, or impromptu weekend baking sessions. It embodies everything we love about seasonal desserts—fresh fruit, minimal effort, and an irresistibly homemade look. With its balance of sweet, tart, and buttery flavors, the sourdough blackberry galette stands as a modern rustic classic—an approachable yet impressive dessert that turns humble ingredients into something memorable.

    Understanding the Recipe – Ingredients and Tools You’ll Need

    Key Ingredients for the Perfect Sourdough Blackberry Galette

    Creating the ultimate sourdough blackberry galette begins with a handful of humble, quality ingredients. Because this dessert relies on texture and freshness, each component plays an essential role in the final result. Below is a guide to what you’ll need and why each element matters.

    • Sourdough Crust Ingredients
      • 1 ¼ cups (160g) all-purpose flour – provides structure and light flakiness; you can substitute part with whole wheat flour.
      • ½ cup (115g) cold unsalted butter, cubed – creates a tender dough and crisp layers.
      • ¼ teaspoon fine sea salt – enhances flavor and balances tanginess.
      • ½ cup (120g) active or discard sourdough starter – contributes mild acidity and rich texture.
      • 1–2 tablespoons cold water – adds just enough hydration to bind the dough.
    • Blackberry Filling Ingredients
      • 2 ½ cups (300g) fresh blackberries – frozen berries work if thawed and drained well.
      • ¼ cup (50g) granulated sugar – sweetens and caramelizes the fruit.
      • 1 tablespoon cornstarch – thickens the juices for a syrupy consistency.
      • 1 tablespoon lemon juice – brightens and balances sweetness.
      • ½ teaspoon vanilla extract – adds warmth and aroma.
    • Optional Finishing Touches
      • 1 beaten egg – for a shiny, golden finish.
      • 1 tablespoon coarse sugar – for sparkle and crunch.
      • Lemon zest or honey drizzle – optional brightness and depth.

    Each ingredient plays its part—flour gives structure, butter ensures tenderness, and the sourdough starter contributes both complexity and lift, making this crust truly special.

    Baking Tools and Preparation Tips

    • Mixing bowl: For blending ingredients evenly.
    • Pastry cutter or fork: Keeps butter pieces cold and dispersed.
    • Rolling pin: For consistent thickness.
    • Baking sheet: Promotes crisp edges and even heat.
    • Parchment paper: Simplifies transfer and prevents sticking.
    • Pastry brush: Applies egg wash smoothly and safely.
    1. Keep ingredients cold. Cold butter is key to flakiness.
    2. Rest the dough. Relaxed gluten improves texture.
    3. Adjust hydration. Starters vary, so add water carefully.
    4. Bake smart. Use parchment and moderate filling moisture to avoid sogginess.
    5. Embrace imperfection. Rustic folds add personality.

    Once your tools and ingredients are ready, you’re set to bake a sourdough blackberry galette that’s flaky, flavorful, and beautifully rustic—perfect for savoring summer’s bounty.

    Step-by-Step Method – How to Make a Sourdough Blackberry Galette

    Preparing the Sourdough Crust

    1. Combine dry ingredients. Whisk flour and salt together for even seasoning.
    2. Cut in butter. Work cold butter into the flour until pea-sized crumbs form.
    3. Add the sourdough starter. Mix gently, adding cold water only as needed to form a cohesive but not sticky dough.
    4. Bring the dough together. Handle lightly to prevent gluten overdevelopment.
    5. Rest and chill. Wrap and refrigerate at least 30 minutes, allowing the butter to firm and the gluten to relax.

    When baked, cold butter releases steam, creating delicate layers, while sourdough acids tenderize the structure for perfect flakiness. This science-backed combination gives every sourdough blackberry galette its signature texture and tang.

    Assembling and Baking Your Galette

    1. Roll out the dough. On floured parchment, roll a 12-inch rough circle about ⅛ inch thick.
    2. Add the filling. Spread blackberry mixture in the center, leaving a 2-inch border.
    3. Fold the edges. Gently overlap and press folds to encase the fruit.
    4. Finish the crust. Brush with egg, sprinkle sugar, add lemon zest if desired.
    5. Bake. Bake at 400°F (200°C) for 35–40 minutes until crust is golden and filling bubbles. Tent edges if browning too fast.

    Let cool 15 minutes before cutting to help juices thicken. Serve warm or at room temperature with whipped cream, vanilla ice cream, or a drizzle of honey for a finishing touch.

    With its fragrant berries and crisp, tangy crust, this sourdough blackberry galette combines simplicity, artistry, and indulgence—an ideal bake for any summery day.

    Tips, Variations, FAQs, and Conclusion

    Helpful Tips, Variations, and Pairing Ideas

    • Chill before baking: Keeps shape and prevents spreading.
    • Dust base: Almond flour or semolina under the fruit helps avoid sogginess.
    • Reheat gently: Warm leftovers in a 350°F (175°C) oven for 10 minutes.
    • Storage: Keep covered one day at room temperature or three days refrigerated; freeze up to a month.
    • Mixed Berry Medley: Combine raspberries, blueberries, and blackberries.
    • Peach & Blackberry: Add sliced peaches for extra juiciness.
    • Savory Galette: Layer roasted blackberries, goat cheese, and thyme.
    • Nutty Finish: Sprinkle crushed pistachios or almonds for added crunch.

    Pair your galette with iced coffee, sparkling lemonade, or chilled rosé. For a sweet finale, serve with lavender honey or ice cream—the tangy crust and jammy filling shine with every bite.

    FAQs About Sourdough Blackberry Galette

    Can I use frozen blackberries? Yes—just thaw and drain excess moisture before mixing to avoid soggy crusts.

    How far in advance can I prepare the dough? It keeps refrigerated for 24 hours or frozen for two months. Thaw before rolling.

    What if my crust spreads too much? Chill the assembled galette 10–15 minutes before baking to maintain structure.

    How long does it stay fresh? Best day of baking, but delicious up to three days when stored covered or chilled.

    Can I make it gluten-free? Replace flour and starter with gluten-free versions, adjusting liquids as needed for consistent dough texture.

    Conclusion

    The sourdough blackberry galette celebrates summer’s end with flaky pastry, juicy berries, and the soulful flavor of sourdough. More than a dessert, it’s a gesture of slow, joyful baking—unpretentious yet impressive. Whether made for gatherings or quiet afternoons, it honors simplicity and seasonality in every bite.

    Slice through its golden layers to reveal glossy berries and buttery fragrance, and you’ll see why it’s a rustic favorite worth returning to each year. Let the sourdough blackberry galette become part of your family’s summer ritual—a baked-from-the-heart treat that turns humble ingredients into something unforgettable.

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