Description

Enjoy the comforting, spiced flavors of a traditional autumn dessert with this clever low-carb twist that uses tender zucchini or chayote to perfectly mimic baked apples. Wrapped in a rich, buttery, and flaky almond flour crust, this sugar-free pie delivers all the nostalgic sweetness you crave.

Ingredients

Scale

Keto Flaky Pie Crust

2 ½ cups blanched almond flour (280g)
⅓ cup coconut flour (35g)
1 teaspoon xanthan gum (3g)
½ teaspoon kosher salt (3g)
½ cup cold unsalted butter, cubed (1 stick / 113g)
3 ounces cold full-fat cream cheese, cubed (85g)
1 large egg, cold
1 teaspoon apple cider vinegar (5ml)

Mock Apple Filling

6 cups peeled, cored, and sliced zucchini or chayote squash (about 4 medium squash / 800g)
3 tablespoons unsalted butter (42g)
¾ cup granulated keto sweetener, such as an erythritol or monk fruit blend (144g)
2 teaspoons ground cinnamon
½ teaspoon ground allspice
¼ teaspoon ground nutmeg
¼ teaspoon kosher salt
1 tablespoon arrowroot powder (8g)
½ teaspoon xanthan gum (1.5g)
1 tablespoon apple cider vinegar or lemon juice (15ml)
1 teaspoon apple extract or flavoring (5ml)
1 teaspoon pure vanilla extract (5ml)

Egg Wash

1 large egg
1 tablespoon water (15ml)

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Instructions

Mix the dry crust ingredients: In a food processor, combine the almond flour, coconut flour, xanthan gum, and kosher salt. Pulse briefly until completely blended.
Cut in the fats: Add the cubed cold butter and cold cream cheese to the processor. Pulse until the mixture resembles coarse, pea-sized crumbs. (For the flakiest texture, place the cubed butter in the freezer for 20 minutes before using).
Form the dough: Add the cold egg and apple cider vinegar. Pulse just until the dough begins to clump together into a ball. Do not overmix, or the butter will melt. Divide the dough into two portions—one slightly larger for the bottom crust (about two-thirds of the dough) and one smaller for the top crust. Flatten each into a disc, wrap tightly in plastic wrap, and chill in the refrigerator for at least 1 hour.
Sauté the filling: While the dough chills, melt the butter in a large skillet over medium-high heat. Add the sliced zucchini (or chayote), granulated keto sweetener, cinnamon, allspice, nutmeg, and salt. Cook, stirring occasionally, until the squash has softened and released its liquids, about 10 to 15 minutes.
Thicken and flavor the filling: Evenly sprinkle the arrowroot powder and xanthan gum over the squash mixture. Stir constantly and cook for another 2 to 3 minutes until the juices thicken into a glossy syrup. Remove the skillet from the heat, then stir in the apple cider vinegar, apple extract, and vanilla extract. Set aside to cool completely.
Roll the bottom crust: Preheat your oven to 350°F (175°C). Place the larger dough disc between two large sheets of parchment paper. Roll outward from the center until the dough is about ¼-inch thick and wide enough to overhang your pie dish. Peel off the top parchment, invert the dough into a 9-inch pie pan, and gently peel away the second sheet of parchment. Press the dough lightly into the bottom and sides. If the dough gets too warm and sticky, chill it for 10 minutes before continuing.
Assemble the pie: Spoon the cooled mock apple filling into the prepared bottom crust. Roll out the smaller dough disc between parchment paper as before. Place it over the filling, or cut it into strips to weave a lattice top. Crimp or flute the edges together to seal. If using a solid top crust, cut 3 to 4 small slits in the center to allow steam to escape.
Glaze and bake: In a small bowl, whisk together the egg and water. Lightly brush this egg wash over the top crust. Bake the pie for 30 to 35 minutes, or until the crust is deep golden brown and the filling is gently bubbling.
Cool before serving: Remove the pie from the oven and let it cool for at least 1 hour before slicing to allow the crust to firm up and the filling to set.

Notes

Why It Works

Squash as a stand-in: Zucchini and chayote have a mild, neutral flavor and a firm texture that perfectly absorbs classic warm spices, making them indistinguishable from real apples once baked.
Xanthan gum for structure: Gluten-free flours lack elasticity, so xanthan gum is essential here to bind the dough, allowing you to roll it out and create a lattice top without it shattering.
Cold fats equal flakes: Using chilled butter and cream cheese creates little pockets of fat within the dough, which melt in the oven to produce a tender, flaky crust.

Common Pitfalls to Avoid

Sticky dough: Keto dough is highly sensitive to heat. If it begins sticking to the parchment paper while rolling, pop it in the freezer for 5 to 10 minutes to firm up the fats.
Soggy bottom crust: Ensure your mock apple filling is completely cooled before spooning it into the unbaked crust. Adding hot filling will melt the butter in the dough prematurely.
Overbrowning: Almond flour browns much faster than traditional wheat flour. If the edges of your crust are getting too dark before the center finishes baking, cover them loosely with a ring of aluminum foil or a pie shield.

Variations

Chayote Squash Swap: While zucchini is easily accessible, chayote squash has an even firmer texture that holds up brilliantly to baking and mimics the crunch of a Granny Smith apple perfectly.
Crumb Topping: Skip rolling out the top crust. Instead, mix your remaining dough with ½ cup chopped pecans, crumble it over the filling, and bake as directed for a keto Dutch apple pie.

Allergy Alert

This recipe contains tree nuts (almonds), dairy (butter, cream cheese), and eggs. Check your apple extract label to ensure it does not contain hidden sugars or unwanted additives.

Nutrition (per serving — estimates)

Nutritional values are approximate, based on standard reference data (USDA FoodData Central). Actual values vary by brand and exact measurements. For precision, use a tracker like MyFitnessPal or Cronometer.

Nutrition

Serving Size: 1 slice
Calories: 280
Sugar: 2g
Sodium: 210mg
Fat: 25g
Saturated Fat: 11g
Carbohydrates: 8g
Fiber: 4g
Protein: 6g