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Mad Creations Keto Recipes
pouring keto custard over a pie

Easy Keto Custard Recipe

My Keto Custard recipe needs just four ingredients and really is delicious, with just 1g net carbs! It can be brûléed, baked, churned as a frozen custard and used in so many other recipes.
5 from 59 votes
Prep Time: 5 mins
Cook Time: 10 mins
Total Time: 15 mins
Course: Dessert, sides
Cuisine: American, Australian
Recipe Category: Low Carb
Calories: 215kcal
Author: Megan Ellam
Servings: 4 serves
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  • 2 tablespoons unsalted butter
  • 1/4 teaspoon xanthan gum



  • Add cream and vanilla to a small saucepan. Whisk mixture over medium heat until it reaches a low simmer and remove from heat.
  • In a separate bowl whisk together sweetener and egg yolks. Stir through the cream mixture and return to heat and continue whisking until custard thickens and coats the back of a spoon.
  • Remove from heat and allow to cool.

To Make Pastry Cream

  • If making Pastry Cream; whisk through butter and xanthan gum after taking off the heat. Push through a sieve to remove any lumps.
  • Leave to cool at room temperature then press cling film over surface of pastry cream and transfer to the fridge. Refrigerate 2-3 hours.


  • Insert Butterfly. Add all ingredients to mixing bowl. Cook 9 min/90 ̊C/speed 4.
  • If making Pastry Cream, add the butter and xanthan gum to the custard in the mixing bowl. Mix 1 min/speed 4. Scrape down the sides of the bowl and mix again 30 seconds/speed 4.
  • Leave to cool at room temperature then press cling film over surface of pastry cream and transfer to the fridge. Refrigerate 2-3 hours.


This recipe is suitable to be made in larger batches if preferred. You can double, triple or quadruple the recipe if you have a large family.
When cooking with the conventional method be careful to keep the temperature low. A custard is mainly eggs and if overheated, you will end up with an eggy custard or worse still, sweetened scrambled eggs!
Keep whisking continuously and don’t leave the custard unattended while on the heat. It helps to keep the consistency smooth if you are whisking and taking note of the thickening of the keto custard.
I have a recipe for Hot Choc Powder in The Healthy Family cookbook.
When pastry cream cools, it can form a skin on the surface. Pressing cling film over the surface stops this from happening.
The custard can be stored in an airtight container in the fridge for up to 3 days. I don’t recommend freezing it as it can separate when defrosting, and it’s much better freshly made.


Serving: 1serve | Calories: 215kcal | Carbohydrates: 2g | Protein: 3g | Fat: 22g | Saturated Fat: 16g | Cholesterol: 230mg | Sodium: 32mg | Potassium: 52mg | Fiber: 1g | Sugar: 1g | Vitamin A: 1105IU | Vitamin C: 1mg | Calcium: 50mg | Iron: 1mg | Magnesium: 4mg | Net Carbs: 1g
Tried this recipe?Mention @meganellam or tag #madcreations!