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A sugar-free blackberry almond galette is a free-form pastry with juicy blackberries and a nutty almond flour filling wrapped inside a flaky butter crust, sweetened with a sugar substitute instead of white sugar.
I started making this after wanting a fruit dessert like my low-sugar spiced apple flax muffins that didn’t spike everyone’s sugar level at family dinners. The crust still turns out flaky and golden because butter, not sugar, does the real work there.
Blackberries release a lot of juice as they bake. Skip the almond flour dusting under the fruit and you’ll end up with a soggy bottom crust. That almond flour soaks up the extra liquid and adds a faint nutty flavor that pairs well with the berries.
This isn’t a fussy dessert. You roll the dough, pile the fruit in the center, fold the edges over, and bake. No pie dish, no crimping skills required.
Why You’ll Love This Recipe
- No refined sugar, sweetened with a sugar substitute instead
- Free-form crust, no pie dish or crimping needed
- Almond flour filling keeps the crust from turning soggy
- Ready in under two hours, most of it hands-off
Ingredient Notes
- All-purpose flour: Spoon and level it rather than scooping straight from the bag, or the crust turns out dense. A 1:1 gluten-free flour blend works if you need it gluten-free.
- Almond flour: Used both in the crust for flavor and under the fruit to soak up juice. Fine, blanched almond flour works best, coarse almond meal makes the crust gritty.
- Granular sugar substitute: I use an erythritol or monk fruit blend measured 1:1 for sugar. Allulose works too but browns faster, so watch the crust a few minutes early.
- Cold unsalted butter: Keep it in the fridge until the moment you cut it into the flour. Warm butter is the main reason galette crusts turn out tough instead of flaky.
- Fresh blackberries: Frozen berries work in a pinch, just toss them in unthawed and add a few extra minutes to the bake time since the filling starts out colder.
- Cornstarch: Thickens the berry juices as they bake. Arrowroot starch swaps in at the same amount if that’s what you have on hand.
- Almond extract: A little goes a long way and pulls the almond flour flavor forward. Vanilla extract works as a milder substitute.
- Egg for egg wash: Gives the crust its shine and deep color. For an egg-free version, brush with heavy cream instead, the color will be a shade lighter.
Baked Blackberry Almond Galette with Sugar-Free Crust
Ingredients
Method
- In a large bowl, whisk together the flour, almond flour, sugar substitute, and salt.
- Add the cold cubed butter and cut it in with your fingertips or a pastry cutter until the mixture looks like coarse crumbs with some pea-sized pieces of butter left.
- Sprinkle in the ice water, 1 tbsp at a time, mixing gently until the dough just comes together when pressed. Don’t overwork it or the crust will turn tough instead of flaky.
- Shape the dough into a disk, wrap it in plastic, and chill for 30 minutes.
- While the dough chills, toss the blackberries with the sugar substitute, almond flour, cornstarch, lemon juice, lemon zest, and almond extract in a mixing bowl. Let sit for 10 minutes so the berries release some juice.
- Heat the oven to 200 C / 400 F and line a 13 x 18-inch sheet pan with parchment paper.
- Roll the chilled dough between two sheets of parchment into a rough 30 cm / 12-inch circle, about 3 mm thick.
- Transfer the dough to the lined sheet pan. Pile the blackberry filling in the center, leaving a 5 cm / 2-inch border of dough uncovered.
- Fold the dough edges up and over the filling, pleating loosely as you go, leaving the center open.
- Brush the exposed crust with the beaten egg and scatter the sliced almonds over the top. Sprinkle with a little extra sugar substitute if using.
- Bake for 35 to 40 minutes, until the crust is deep golden brown and the filling is bubbling thickly in the center.
- Cool on the pan for at least 15 minutes before slicing. This lets the filling set so it doesn’t run all over the plate.
Notes
- Chill the dough a full 30 minutes or it will be hard to roll out.
- Use a metal sheet pan so the bottom crust browns evenly.
- Sugar substitute sweetness varies by brand, taste the filling before baking.
- Don’t skip the 10 minute berry rest, it keeps the filling from being watery.
Tips for Success
- Keep the butter and water ice-cold so the crust bakes up flaky instead of dense.
- Let the sugared blackberries sit for 10 minutes before assembling so excess juice has somewhere to go.
- Don’t skip the almond flour under the fruit, it keeps the bottom crust from turning soggy.
- Fold the dough loosely and don’t worry about neat pleats, a rustic look is the point here.
- Let the galette cool fully before the first slice or the filling will run instead of hold its shape.
Variations
- Swap blackberries for raspberries or a mix of berries, keeping the total weight around 400 g.
- Use a gluten-free flour blend in place of all-purpose flour for a fully gluten-free crust.
- Add 1/2 tsp cinnamon to the filling for a warmer, spiced background note against the tart berries.
Storage and Reheating
Sugar-free blackberry almond galette keeps well at room temperature for 1 day, loosely covered. After that, move it to the fridge, where it holds for 3 to 4 days.
To reheat, warm slices in a 160 C / 325 F oven for 8 to 10 minutes until the crust crisps back up. Skip the microwave, it turns the crust soft and a little chewy instead of flaky.
This galette also freezes well unbaked. Wrap the assembled, unbaked galette tightly and freeze for up to 2 months, then bake straight from frozen, adding 10 to 15 minutes to the bake time.
Serving Suggestions
Sugar-free blackberry almond galette works fine on its own, still warm from the oven with the crust crackling a bit at the edges.
For something extra, add a spoonful of unsweetened whipped cream or a small scoop of vanilla ice cream on the side. A dusting of powdered erythritol over the top makes it look finished for company.
At breakfast, I’ll eat a cold slice with plain Greek yogurt. It works there too, since the filling isn’t overly sweet to begin with.
FAQ
How do I know when my blackberry almond galette is done baking?
The crust should be deep golden brown and the filling bubbling thickly in the center, not just around the edges. This usually takes 35 to 40 minutes at 200 C / 400 F. If the crust looks pale after 30 minutes, tent the edges with foil so they don’t burn before the center catches up.
Can I use frozen blackberries instead of fresh in this galette?
Yes, frozen blackberries work, but don’t thaw them first. Toss them straight from the freezer with the sugar substitute, almond flour, and cornstarch, and add about 5 extra minutes to the bake time since the filling starts out colder and releases more liquid as it bakes.
Can I make this sugar-free galette ahead of time?
Yes, assemble the galette unbaked, wrap it tightly, and freeze for up to 2 months. Bake it straight from frozen, adding 10 to 15 minutes to the time, or refrigerate the dough disk alone for up to 2 days before rolling.
What goes well with blackberry almond galette?
Unsweetened whipped cream or a small scoop of vanilla ice cream rounds out the tartness of the blackberries and softens the crust’s edge. Plain Greek yogurt works too if you’re eating a slice for breakfast instead of dessert, since the filling isn’t overly sweet to begin with.
Is this sugar-free blackberry almond galette keto friendly?
This galette is lower in sugar than a traditional version since it uses a sugar substitute instead of white sugar, but the crust still uses all-purpose flour, so it isn’t low-carb or keto. Swap in a gluten-free almond flour crust and a low-carb thickener if you need a stricter carb count.
What’s the difference between this galette and a regular blackberry pie?
A galette skips the pie dish and crimped edges, the dough gets folded loosely over the fruit and baked free-form on a sheet pan. It’s more forgiving than pie since a rustic, imperfect fold is part of the look, not a flaw.
