Irresistible Gluten-Free Peach Crumble Bars

These gluten-free peach crumble bars perfectly combine a buttery lemon shortbread with a sweet and juicy peach filling. Easy to prepare, they’re a delightful dessert for summer or any time you want a fruity treat. What’s even better? They’re both gluten-free and egg-free, yet so delicious that nobody will guess it.

By DelishCorner -Madilyn-

Stacked on a plate, these crumble bars look as tempting as they taste. The shortbread provides a rich, crumbly base, while the peaches offer a refreshing, sweet filling. Finished with a crumbly topping, each bite melts in your mouth.

If you want to make the most of the peach season, these bars are a must. Make them repeatedly—you won’t regret it. They’re not only a crowd-pleaser but also simple enough to whip up any day of the week.

Why You’ll Love These Gluten-Free Peach Crumble Bars

Buttery Lemon Shortbread

The base and crumble topping are both made from a soft, buttery lemon shortbread. It has the perfect balance between crisp and crumbly, with bright notes of lemon and a touch of vanilla. The dough is lightly sweetened so it complements, rather than overpowers, the peach filling.

Juicy Peach Filling

The filling is loaded with peaches, giving just the right balance of fruit to crust. Soft but not mushy, the peaches release just enough juice to soak the shortbread slightly, making each bite flavorful and moist. A hint of lemon juice adds brightness, and vanilla enhances the natural sweetness of the peaches.

Super Easy to Make

No fancy kitchen equipment is needed. You won’t need a stand mixer or even a hand mixer—just a mixing bowl, a spoon, and your hands. Even with gluten-free ingredients, these bars hold together beautifully, avoiding the overly crumbly texture often found in gluten-free baking.

Egg-Free Delight

Thanks to the shortbread base, these crumble bars require no eggs. That makes them suitable for anyone with egg allergies, while still delivering a tender and satisfying texture.

Preparing the Lemon Shortbread Dough

You’ll use the same shortbread dough for both the bottom crust and the topping. Here are some tips to get the best results:

  1. Use organic, unwaxed lemons – The zest releases essential oils that give a fresh, fragrant flavor.
  2. Rub zest into sugar – This ensures the lemon flavor is fully infused into the dough.
  3. Weigh your ingredients – Gluten-free flour blends vary in density, so a digital scale guarantees accurate measurements and avoids a dry, crumbly dough.
  4. No raising agents needed – Baking powder or soda can make shortbread too delicate, so skip them.
  5. No pre-bake necessary – Unlike many fruit bars, this dough doesn’t need to be baked before adding the peaches. Baking all elements together will still give a crisp, buttery crust.

Choosing and Preparing the Peaches

For the filling, you can either peel the peaches or leave the skin on. Both work well. Here’s the process for a peeled version:

  1. Boil a large pot of water and prepare an ice water bath.
  2. Score a small “X” on the bottom of each peach.
  3. Submerge the peaches in boiling water for 30–60 seconds.
  4. Transfer to the ice water bath to cool.
  5. Peel off the loosened skin.

Select peaches that are juicy but firm, not overly ripe, to prevent a mushy filling.

Peach Filling Tips

The filling is simple but key to the perfect texture:

  • Sugar – Just a modest amount is enough; the shortbread adds sweetness.
  • Cornstarch – Thickens the peach juices to prevent a runny filling.
  • Lemon juice and vanilla – Enhance flavor and balance the sweetness.
  • Assemble last minute – Toss peaches with sugar and other ingredients just before adding to the crust to avoid excess moisture.

Assembling the Crumble Bars

  1. Divide the dough – Use two-thirds for the bottom layer, one-third for the crumble on top.
  2. Layer – Press the bottom dough into a parchment-lined pan. Spread the peach filling evenly, then crumble the remaining dough on top. Allow some of the peaches to peek through for a beautiful look and to let moisture escape.
  3. Bake – Preheat oven to 375ºF (190ºC) and place on the lower-middle rack. Bake for 50–55 minutes until the crumble is golden and juices are bubbling in the center.
By DelishCorner -Madilyn-

Cooling and Serving

Allow the bars to cool completely at room temperature, then chill in the fridge for at least 30 minutes before slicing. This helps the shortbread firm up and makes neat slices easier. You can also enjoy them warm with ice cream, but they’ll be more delicate.

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Irresistible Gluten-Free Peach Crumble Bars


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  • Author: Madilyn

Ingredients

Gluten-Free Lemon Shortbread:

125 g (½ cup + 2 tbsp) caster or granulated sugar

Zest of 2 lemons (organic, unwaxed recommended)

140 g ( sticks) unsalted butter, softened

1 tsp vanilla bean paste or 2 tsp vanilla extract

300 g (2½ cups) plain gluten-free flour blend

¾ tsp xanthan gum (omit if your flour blend contains it)

½ tsp salt

Peach Filling:

5 medium peaches (about 750 g / 1½ lbs), peeled or unpeeled

75 g (¼ cup + 2 tbsp) caster or granulated sugar

15 g (1 tbsp) cornstarch

15 g (1 tbsp) freshly squeezed lemon juice

1 tsp vanilla bean paste or 2 tsp vanilla extract


Instructions

Peach Preparation:

  1. Bring a large pot of water to a boil and prepare an ice bath.
  2. Score a small “X” on the bottom of each peach.
  3. Boil peaches 30–60 seconds, then transfer to ice bath.
  4. Peel skin off (optional). Slice peaches into ½-inch wedges.

Shortbread Dough:

  1. Preheat oven to 375ºF (190ºC). Line a 9-inch (23 cm) square pan with parchment paper.
  2. Rub lemon zest into sugar in a large bowl. Add butter and vanilla; mix until combined.
  3. Whisk together flour, xanthan gum, and salt. Add to butter mixture and knead until crumbly dough forms.

Assembling the Bars:

  1. Press ⅔ of the dough into the pan to form the base. Smooth evenly.
  2. Spread peach filling over the shortbread.
  3. Crumble remaining ⅓ of dough on top, leaving some peaches exposed.
  4. Bake 50–55 minutes until topping is golden and filling bubbles.

Cooling & Serving:

  1. Cool completely to room temperature. Chill at least 30 minutes before slicing.
  2. Serve plain or with a scoop of vanilla ice cream.

Notes

  • Peach ripeness: Use firm, juicy peaches to avoid a mushy filling.
  • Gluten-Free Flour: A reliable store-bought blend works best. If making your own, measure by weight for accuracy.
  • Shortbread texture: Dough may be crumbly; this is normal for gluten-free shortbread.
  • Serving: Warm bars are soft and delicate; chilling ensures neat slices.
  • Storage: Store in a covered container at room temperature or in the fridge for 3–4 days.
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