Home » desserts » Totally Legit Keto Blueberry Pie (with a lattice pie crust!) 🥧

Totally Legit Keto Blueberry Pie (with a lattice pie crust!) 🥧

Bursting with summer berries and paired up with my famous flaky pie crust, this gluten free and keto blueberry pie truly is as good as it gets. i.e. its the real deal!

Gluten Free & Keto Blueberry Pie (with a flaky lattice pie crust!) and a scoop of vanilla ice cream on top
Gluten Free & Keto Blueberry Pie (with a flaky lattice pie crust!)

Keto Blueberry Pie 🥧

With my (suuuper flaky!) pie crust

Sometimes life really does give you lemons. And by lemons I mean ridiculously good summer blueberries. So many, in fact, that all you can dream up is a legit summer pie.

Lattice pie crust, fluted edges ‘n all that jazz.

And by all that jazz, I mean an impossibly creamy (no churn!) vanilla ice cream. You know, one that doesn’t freeze rock solid.

(Because RIP to all the bent spoons that have succumbed to erythritol based ice creams).

But back to pie, a true labor of love. So do make sure to procure some terrific summer berries, you know, to make it all worth while. So turn on some jams, be mindful and enjoy the process!

Overhead shot of unbaked Keto Blueberry pie filling, with a mix of both jam and fresh berries
Gluten Free & Keto Blueberry Pie (with a flaky lattice pie crust!)

The Filling: Jammy vs Fresh

How about we do a mix of both?! And I guess that’s the best fruit pie making advice I can give you. Incidentally, not mine originally, but by the lovely Southern lady who passed on the *brilliant* top tips of adding beer (or coffee)(or both!) to chili. (Truly brilliant, in case you haven’t tried it!).

Well, she poised a very interesting opinion about pie. How the best kinds have the best of both worlds: a jammy filling that’s also bursting with fresh berries.

And, she was right! At least imho. So what I like to do here is cook about three quarters of the blueberries on the stovetop, and this way I can adjust the sweetener to taste too. And, vip, this way you can reduce the thickener incidentally (i.e. reduce the carb count too!)… or leave it out completely even (though I would cook most of the berries here to avoid soggy pie).

This way you are reducing the juice of your berries on the stove top and your pie will also bake quicker. Which is handy too, as we all know keto flours have a tendency to brown faster (and so this pie crust is good and done after about 40 minutes in the oven).

But do note that a little thickener does result in the best texture. Cornstarch is the usual choice for blueberries (a ‘dirty’ keto choice I suppose), so tapioca or arrowroot are also a solid option (still a starch, but grain free, paleo etc).

Feeling a little extra? Adding a touch of cinnamon (or lemon zest!) to the filling brings out beautiful notes in the blueberries. Sometimes I’ll even add it to the pie crust itself, to create even more boldness in the flavors. On that note, I once had a blueberry pie topped with cinnamon ice cream: out. of. this. world! (And on that note, why isn’t cinnamon ice cream more a thing?!)

Overhead shot showing how to weave a keto lattice pie crust
Gluten Free & Keto Blueberry Pie (with a flaky lattice pie crust!)

The Sweetener

I suggest truly sweetening to taste here (another case for the beauty of partially cooking the filling on the stove top!). As we all know, keto palates adapt quickly to the absence of sugar- i.e. your fresh summer blueberries (or frozen variety, ahem!) are likely to even be plenty sweet (nearly) solo.

Still, I like to add a touch of allulose and a squeeze of lemon juice to amp up the flavors. Though Lakanto Golden (barely any cooling aftertaste here) and xylitol (non-corn though to avoid tummy troubles!) are solid options too.

And if using xylitol, make sure to be careful if you have a pup (or kitty!) around the house, as it’s highly toxic to the little guys!

Close up of keto lattice pie crust with almond and coconut flours
Gluten Free & Keto Blueberry Pie (with a flaky lattice pie crust!)

The Deets

When rolling out the pie crust, you may want to use parchment or wax paper. Given the lack of gluten, the crust is more fragile and it will break easily if not handled with care. So I suggest rolling it out between two sheets of parchment paper. Easy peasy.

If it begins to become unmanageable as it comes to room temperature (you know, and the butter melts away), just pop it into the freezer for a few minutes before carrying on.

And talking about lack of gluten, this is the reason why the dough will crack slightly when baked. I’ve noticed that the cracking can be lessened by allowing the dough to rest overnight (as it hydrates more evenly, I’m guessing), though note that taste and texture will be the same. I also noted that by increasing the xanthan gum you can get a silky smooth crust, but at the cost of losing quite a bit of flakiness. So I most definitely sacrificed some aesthetics for the sake of taste and texture.

If you’re still struggling with the pie crust, up the xanthan gum to 1/2 teaspoon. No biggie.

One last thing. Like with any pastry dough, make sure not to over-process the dough. The mixture ought to resemble coarse breadcrumbs rather than cookie dough.

And just pinch together any cracks. No biggie either, just takes a little practice. 🙂

Overhead shot of a keto lattice pie crust with fluted edges
Gluten Free & Keto Blueberry Pie (with a flaky lattice pie crust!)

Just One Rule

Make sure the filling is completely chilled before filling up the pie. Otherwise you will (quite literally) see the pastry melt before your very eyes.

And remember that, like with any pastry dough, you need to work quickly and over a cool surface. Again, if the dough becomes too hard to manage, you can always pop it back in the fridge (or even freezer) for 15 minutes before carrying on!

Overhead shot of a slice of Keto Blueberry pie with a scoop of vanilla ice cream
Gluten Free & Keto Blueberry Pie (with a flaky lattice pie crust!)

And enjoy the beautiful mess that is a truly bursting blueberry pie!

Gluten Free & Keto Blueberry Pie (with a flaky lattice pie crust!) and a scoop of vanilla ice cream on top
Gluten Free & Keto Blueberry Pie (with a flaky lattice pie crust!)
Flakey Gluten Free, Low Carb & Keto Pie Crust #keto #glutenfree #lowcarb #piecrust #healthyrecipes #grainfree
Flakey Gluten Free, Low Carb & Keto Pie Crust

p.s. if you find yourself short of kitchen equipment (you know, pie moulds etc), you can whip up some pretty legit galettes too. You know, essentially french for lazy pies (but we can call them rustic too). Which are also, incidentally, great too if you so happen to be flying solo. Or doing keto solo. Or want to reduce the carb count (for they have a higher ratio of pie crust to blueberries). You can find the full deets on Keto Summer Favorites.

Gluten Free & Keto Blueberry Pie (with a flaky lattice pie crust!) and a scoop of vanilla ice cream on top

Keto Blueberry Pie (with a lattice pie crust!)

Bursting with summer berries and paired up with my famous flaky pie crust, this gluten free and keto blueberry pie truly is as good as it gets. i.e. its the real deal!
4.75 from 4 votes
Prep Time 20 mins
Cook Time 1 hr
Chilling Time 1 hr
Course Breakfast, Dessert
Cuisine American, Keto
Servings 10 slices
Calories 270 kcal

Ingredients
 
 

For the keto pie crust

For the blueberry filling

  • 900 g blueberries
  • 1/4-1/2 cup allulose golden erythritol or xylitol, to taste
  • 1 tablespoon lemon juice to taste
  • 1/4 teaspoon cinnamon *
  • 1 tablespoon tapioca arrowroot or cornstarch (a 'dirty' keto choice)
  • 15 g unsalted grass-fed butter cut into small pieces

Instructions
 

For the keto pie crust

  • See recipe video for guidance on the pie crust, and whip up a double batch! You can make it three days ahead, or even freeze it for a couple months (simply thaw it out in your fridge overnight and roll it out per usual!). 

For the blueberry filling

  • Add about 3/4 of the blueberries, 1/4 cup of sweetener (to start), lemon juice and cinnamon to a saucepan over medium heat. Simmer for 10-13 minutes, or until the blueberries begin to reduce. Taste for sweetness and add more if needed, dissolve the thickener of choice in a tablespoon of water (i.e. make a slurry!), pour it into the blueberries and cook until just thickened. Set aside to cool completely and fold in the remaining fresh berries.

To assemble the pie

  • Preheat oven to 390°F/200°C. Lightly butter a 9 inch pie pan. Roll out 1 batch of pie crust into a roughly 13-inch circle, between two sheets of parchment paper. Feel free to lightly dust with coconut flour as needed. Transfer to the pie dish, using the parchment paper as an aid. Refrigerate while you prepare the rest. 
  • Roll out the second pie crust and trim to desired width for lattice (roughly 1 1/2 inch). Take your pie dish out of the fridge, fill up with chilled blueberry filling, dot the pieces of butter on top and weave the lattice pie crust, crimping the edges to seal. You'll have leftover pie crust, which I simply re-roll and turn into crackers!
  • Brush with egg wash and bake for 15 minutes. To get a shiny finish, take your pie out of the oven and brush it quickly and lightly again with more egg wash (grain free baking beautifying hack!). And if you notice the edges are browning too quickly, simply crimp foil around them (just mind your fingers pretty please!). Return to oven and bake until fully golden (20-25 minutes longer).
  • Allow to cool completely to allow the filling to set- trust me, worth the wait! Now top off with a good scoop of vanilla ice cream and enjoy your hard work!

Video

Notes

Please note that nutrition facts were estimated per very large slice (obviously more carb-y than other desserts on the site given the amount of blueberries... but imho totally worth it!). Though do note you could always make it into (more less carby!) hand pies... or do a single crust and shave off about 2g net or whip up some galettes (much less berry filling = 7g net carbs a serving rather than 12g for the pie). 

Nutrition

Serving: 1slice | Calories: 270kcal | Carbohydrates: 16g | Protein: 1g | Fat: 2g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Trans Fat: 1g | Cholesterol: 3mg | Sodium: 12mg | Potassium: 72mg | Fiber: 4g | Sugar: 9g | Vitamin A: 86IU | Vitamin C: 9mg | Calcium: 7mg | Iron: 1mg
Keyword gluten free blueberry pie, keto blueberry pie, low carb blueberry pie
Whip up this recipe?Comment below or drop me a line @gnomgnom._ and tag #gnomgnomyum!

11 comments

  1. Wendy says:

    Siiiiiii! Hola Paola! Por fín encuentro una receta para hacer desde “0”,es que, abre la caja, la lata, el frasco. Pues digo que eso no es cocinar ,no te parece?. Gracias hermosa y cuídate mucho. Mñn lo hago. Besitos. Saludos desde España

  2. Katie says:

    Thank you for being so thorough with your recipes. I want to make it this weekend, but do you think I can turn it into a skillet pie and create a latttice on top with your pie crust? Itt would save carbs right? Any guidance would be appreciated

    • Hi Katie! yes that would work for sure, I would just make sure the skillet is completely cool before adding the crust (it might also be better to do a slab pie type of crust rather than a lattice). Same cook time, about 35-40 minutes or until the crust is nice and golden. xo! Paola

  3. Julia says:

    Just to say that we’ve been making your blueberry galettes since the ebook came out three years ago Paola! Thank you for such good recipes. Julia F.

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