Gluten-Free Peach Melba Cookie Bars

Bake gluten-free peach melba cookie bars with a buttery almond crust, raspberry-peach filling, easy substitutions, and simple make-ahead storage tips.

The first time I made these gluten-free peach melba cookie bars, I was scrambling to bring something to a Labor Day potluck and had exactly one bag of gluten-free flour, some almond flour, and a jar of peach preserves in the pantry. I figured I’d wing it, and the bars came back to me with an empty pan and three people asking for the recipe.

Well, that’s the moment I realized this classic peach melba combination of peaches and raspberries works just as well in a cookie bar as it does in the original dessert. Have you ever had a recipe come together better than you expected on the first try?

Why You’ll Love This Gluten-Free Peach Melba Cookie Bars

• Buttery, shortbread-like base with a jammy fruit center and a crisp, toasted almond crumble on top
• Beginner-friendly recipe: one pan, one bowl for the crust, and no mixer required
• Naturally works as a make-ahead dessert since the bars slice cleanly after chilling
• Perfect for potlucks, lunchbox treats, or any warm-weather gathering where portable dessert matters

The Secret to Perfect Gluten-Free Peach Melba Cookie Bars

The secret here is the double role that xanthan gum and almond flour play together in the crust. Since gluten-free flour lacks the elastic protein network of wheat flour, the crust needs help holding together once it’s sliced.

• Xanthan gum acts as a binder in place of gluten, which is why most gluten-free flour blends already include it
• Cold, cubed butter cut into the dry ingredients creates small pockets of fat that give the crust its shortbread-like texture
• Reserving crumble for the topping instead of mixing it all into the base keeps the bars from turning dense
• Folding the raspberries in gently, rather than stirring hard, keeps some whole berries intact for pockets of fresh flavor

This combination solves the biggest complaint people have about gluten-free bar cookies, which is a crust that either crumbles apart or turns gummy in the middle.

Ingredients

Cookie Base and Crumble

• 1½ cups gluten-free all-purpose flour, with xanthan gum
• ½ cup almond flour
• ½ cup granulated sugar
• ¼ tsp salt
• ½ cup unsalted butter, cold and cubed
• 1 tsp vanilla extract

Peach-Raspberry Filling

• ¾ cup peach preserves
• ½ cup fresh raspberries
• 2 tbsp raspberry preserves
• 1 tsp fresh lemon juice
• ½ tsp vanilla extract

Topping

• ¼ cup sliced almonds
• 1 tbsp powdered sugar, optional

Instructions

1. Preheat the oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper, leaving a little overhang on two sides for easy lifting later.

2. In a bowl, whisk together the gluten-free flour, almond flour, sugar, and salt until evenly combined.

3. Cut in the cold butter with a pastry cutter or your fingertips until the mixture resembles coarse crumbs, with pea-sized bits of butter still visible throughout.

4. Stir in the vanilla until the dough just starts clumping together.

5. Reserve about ¾ cup of the crumb mixture for the topping. Press the remaining mixture firmly into the bottom of the prepared pan in an even layer.

6. Bake the crust for 15 minutes, until lightly golden around the edges.

7. Meanwhile, stir together the peach preserves, raspberry preserves, lemon juice, and vanilla in a small bowl.

8. Gently fold in the fresh raspberries, being careful not to crush them completely, so some whole berries remain.

Pro tip: if your raspberries are especially juicy, pat them dry with a paper towel first so the filling doesn’t turn watery once baked.

Assembling and Finishing the Bars

9. Spread the peach-raspberry filling evenly over the warm crust, right to the edges of the pan.

10. Sprinkle the reserved crumble mixture over the filling, followed by the sliced almonds, so the top has an even, speckled coverage.

11. Bake for another 30–35 minutes, until the edges are golden brown and the fruit filling is bubbling gently in the center.

12. Cool completely in the pan for at least 1 hour. You know, patience really pays off here, since cutting too early means the filling oozes instead of holding its shape. For cleaner slices, refrigerate for 30–60 minutes.

13. Lift out using the parchment paper overhang and cut into 12 bars.

14. Dust lightly with powdered sugar before serving, if desired.

Make It Your Own

Man, oh man, if you can’t find fresh raspberries, frozen ones work fine as long as you thaw and drain them first. Skipping that step is the fastest way to end up with a soggy peach-raspberry filling that won’t set properly.

Swap the almond flour for finely ground gluten-free oat flour if you’re dealing with a nut allergy, since almond flour is a key part of this berry peach baking base. The texture will be slightly less rich, but the bars will still hold together well.

For a dairy-free version, substitute a plant-based butter stick that’s designed for baking rather than a soft tub spread. Tub spreads tend to have too much water content, which can make the crust spread thin instead of staying crisp.

If peach preserves aren’t available, apricot preserves make a close substitute since they share a similar sweetness and texture. Just be aware the flavor will lean slightly less floral than the classic peach melba pairing.

Common Problems & Solutions

Problem: The crust crumbles apart when you try to slice it.
Solution: This usually means the crust didn’t chill long enough before cutting, or the butter wasn’t cold enough going into the oven. Refrigerate the fully cooled bars for at least 30 minutes and use a sharp knife for clean cuts.

Problem: The filling stayed runny instead of setting.
Solution: Fresh raspberries release extra moisture as they bake, so if yours were very juicy, the filling needs more cooling time to firm up. Let the bars rest a full hour, or chill them, before slicing.

Problem: The bottom crust turned out gummy instead of crisp.
Solution: This is a common gluten-free baking issue caused by underbaking the base before adding the filling. Make sure the crust bakes the full 15 minutes and looks lightly golden before you spread the filling on top.

Storage & Meal Prep

Method	Duration	Notes
Counter	2-3 days	Airtight container
Fridge	5-7 days	Bring to room temp
Freezer	2-3 months	Wrap individually

These bars actually taste even better the next day, once the peach-raspberry filling has had time to fully set. For a no-waste tip, save any leftover crumble topping and sprinkle it over yogurt or oatmeal instead of tossing it.

Your Questions Answered

Serving Suggestions

These bars are a natural fit for a Fourth of July dessert table or a Sunday family gathering, since they slice neatly and travel well in a covered dish. For a fuller spread, pair them with something savory like this turkey taco zucchini rice casserole.

If you’re building out a gluten-free bread basket to go alongside dessert, this gluten-free white mountain bread recipe rounds out the meal nicely.

The xanthan gum doing the structural work in this crust isn’t just a filler ingredient. According to King Arthur Baking’s guide to xanthan gum, it steps in as the binding agent that gluten normally provides in wheat-based crusts.

Final Thoughts

Give these peach melba cookie bars a try the next time you need a make-ahead dessert, and let me know in the comments if you swap in a different fruit combo. If you loved them, a quick rating or a pin on Pinterest genuinely helps other home cooks find this recipe too.