Keto Rhubarb Custard Bars Recipe – Low Carb & Sugar-Free Dessert
Introduction
These keto rhubarb custard bars combine the tartness of fresh rhubarb with a rich, creamy custard layer on top of a buttery almond flour crust. Perfect for anyone following a low-carb diet or looking for a sugar-free dessert option. If you love rhubarb desserts, you might also enjoy our delicious keto rhubarb pie recipe for another seasonal treat.
Ingredients
For the crust:
- 1 1/2 cups almond flour
- 1/4 cup powdered erythritol
- 1/3 cup melted butter
- 1/2 teaspoon vanilla powder
- Pinch of salt
For the custard layer:
- 2 large eggs
- 1/2 cup heavy cream
- 1/4 cup powdered erythritol
- 1 teaspoon vanilla powder
For the rhubarb topping:
- 2 cups diced fresh rhubarb
- 2 tablespoons powdered erythritol
- 1/2 teaspoon cinnamon
Instructions
Step 1: Prepare the crust
Preheat oven to 350°F (175°C). Mix all crust ingredients in a bowl until well combined. Press firmly into an 8×8 inch baking pan lined with parchment paper. Bake for 12-15 minutes until lightly golden.
Step 2: Make the custard
While the crust bakes, whisk together all custard ingredients in a medium bowl until smooth. Set aside.
Step 3: Prepare the rhubarb
Toss diced rhubarb with erythritol and cinnamon. Spread evenly over the baked crust.
Step 4: Assemble and bake
Pour the custard mixture over the rhubarb layer. Bake for 25-30 minutes until the custard is set. Cool completely before slicing into bars. For more keto dessert ideas, check out our easy keto summer sugar cookies recipe.
Tips and Tricks
- For extra flavor, add a teaspoon of lemon zest to the custard mixture
- If rhubarb is very tart, increase sweetener by 1-2 tablespoons
- Store leftovers in the refrigerator for up to 5 days
- These bars freeze well for up to 3 months
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Frequently Asked Questions
Can I use frozen rhubarb?
Yes, but thaw and drain it thoroughly first to prevent excess moisture in your bars.
What can I substitute for erythritol?
You can use monk fruit sweetener or allulose in equal amounts.
How do I know when the custard is done?
The custard should be set with just a slight jiggle in the center when shaken gently.
Conclusion
These keto rhubarb custard bars make a perfect summer dessert that’s both refreshing and satisfying. The combination of tart rhubarb and sweet custard creates a wonderful balance of flavors. If you’re looking for more celebration-worthy keto desserts, try our keto graduation sheet cake recipe for your next special occasion. Don’t forget to pin this recipe to save it for later!
