This low-carb crustless pumpkin pie delivers everything people expect from classic pumpkin pie without a crust, sugar spikes, or grainy texture. Clean slices, real custard structure, and full pumpkin flavor make it ideal for holidays, make-ahead desserts, and anyone eating low-carb or keto-leaning. For another low carb holiday dessert, see the texas pecan pie.
Table of Contents
Why This Crustless Pumpkin Pie Works
Heavy cream and eggs form a true custard base, while a small amount of coconut flour replaces the structural role of a crust. Allulose-based sweeteners prevent crystallization, keeping the filling smooth even after refrigeration. Chilling finishes the set, which is why the pie slices clean only once fully cold. None of these ingredients are doing double duty by accident; each one solves a specific problem that comes up when a custard pie has no crust holding the edges together while it bakes.
Ingredient Spotlight
Pumpkin Purée
Using a full 15-oz can ensures strong pumpkin flavor and proper moisture balance without dilution.
Allulose Sweeteners
Per IFIC guidance, allulose behaves like sugar during baking but does not recrystallize, avoiding the gritty texture common in low-carb pumpkin pies.
Coconut Flour
Used sparingly, coconut flour absorbs excess moisture and stabilizes the custard without making it dense or cakey.
Crustless Pumpkin Pie Troubleshooting and Pro Tips
If the center looks slightly soft when warm, that’s correct — it firms as it chills.
Do not exceed 1½ Tbsp coconut flour or texture will shift from custard to cake.
Use powdered sweetener for smooth integration with no graininess.
A water bath is not required here; the coconut flour and full-fat cream already give the custard enough structure to bake evenly without one.
Make-Ahead, Storage & Reheating
This pie is best made a day ahead and stored refrigerated.
Keeps well for 4–5 days covered in the refrigerator.
Serve cold or allow slices to sit at room temperature briefly before serving.
Serving Suggestions
Serve plain for the lowest carb count, or add whipped cream made with allulose.
Optional praline topping can be added for guests not eating low-carb.
A light dusting of cinnamon or a few toasted pecan pieces on top adds texture without adding meaningful carbs to the slice.
Frequently Asked Questions
Does this need a crust?
No — the custard sets fully without one due to the cream, eggs, and coconut flour. The custard itself is sturdy enough to hold a clean slice on its own, the way a crust normally would.
Can this be frozen?
Not recommended; freezing compromises custard texture.
Why does it slice better the next day?
Custard structure finishes setting during refrigeration, which is essential for clean slices.
Every sweetened recipe on this site draws from the same short list of substitutes, allulose leading the way with a touch of erythritol for the finish. The full reasoning behind that list is laid out on the Low Carb Ingredient Substitutes guide.
Low Carb Crustless Pumpkin Pie
Ingredients
- 15 oz pumpkin puree
- 1½ cup heavy cream
- 3 egg , room temp, light beat
- ½ cup powdered monkfruit allulose
- ¼ cup brown monkfruit allulose
- 1 Tbsp pumpkin pie spice
- ¼ tsp sea salt
- 2 tsp vanilla
Thickener:
- 1½ Tbsp coconut flour
Instructions
- Whisk to combine pumpkin, cream, eggs, sweeteners, spice, salt, vanilla.
- Whisk in coconut flour until smooth.
- Lightly oil 9″ pie pan.
- Pour custard into pan.
- Bake in a 350°F preheated oven for 45–60 minutes until center is just set but slightly wobbly.
- Cool completely on rack on counter.
- Chill 4 hours or overnight for clean slices.
Optional Praline Topping:
- 1 cup fine chopped pecans
- ½ cup packed brown sugar
- 2 Tbsp honey
Remove pie from oven and add topping:
- Using a fork, combine pecans and brown sugar.
- Drizzle in honey and mix until combined.
- Spoon topping on pie top, and gently press it down with a spoon or fork so it sticks on the filling.
- Return pie to oven and bake for an additional 15 minutes.
- Cool completely on a wire rack, then refrigerate for at least 2 hours.