This Keto Egg Fast Custard Recipe is salted caramel flavored, but can be customized to be almost any flavor you like that comes in a calorie free extract! This egg fast custard is delicious, super easy, and fits into my 5 Day Egg Fast Diet Menu Plan!!!
So it’s day three of my keto egg fast and I’m down another pound this morning for a total loss of 6 pounds so far. I know it’s mostly water weight but I don’t care – it’s still nice to get excited about stepping on the scale every morning again. It reminds me of when I first started keto and the pounds just melted off! It’s very encouraging after such a long dry spell of not losing!

Also of note, I have tons of energy! My mind is clearer, I’m not tired, I feel great overall. Yesterday I did a bunch of yard work at a friend’s new house, and I never felt like I ran out of steam.
My body is obviously getting everything it needs from this keto egg fast, unlike other fasts I’ve tried and read about, where you are totally crashing by the third day. As a reminder, I’m supplementing daily with magnesium, potassium, and making sure I’m getting plenty of sodium as well.
What I Ate on Day Two of my Keto Egg Fast
8 eggs
2 Tbsp butter
6 Tbsp sugar free mayonnaise
1 Tbsp MCT oil (in my bulletproof coffee)
4 string cheese
1 oz sharp cheddar
36 oz La Croix sparkling water
102 oz spring water
16 oz diet coke (I WAS WEAK, GAH!)
So I’m sure you’re all dying to know –Â Do I hate eggs yet? Surprisingly the answer is no. I’ve eaten nothing but eggs, cheese, and butter for three days on this keto egg fast, and I AIN’T EVEN MAD ABOUT IT.
I think the strategy to avoid egg burnout on an egg fast is to change up how you eat them so that it doesn’t feel like you’re eating eggs at every meal.
And there are so many great possible combinations to be had! I’ll be posting more keto egg fast friendly recipes here throughout the week, and they will all be used in the keto egg fast meal plan that I’ll post at the end of next week.

This egg fast custard was the perfect way for me to end my first day of egg fasting, and I plan to make another batch tomorrow. Since I’m avoiding heavy whipping cream for this egg fast, how to get the right texture was problematic.
I finally settled on a mixture of eggs, cream cheese, and water to get the right consistency in this egg fast custard. It was slightly grainier in texture than a typical silky custard made with cream, but definitely still custard-like – and a REALLY nice break from the heavier consistency of cooked eggs in other forms.

You could eat this egg fast custard without the caramel sauce, but why would you? It tastes amazing, and for the purpose of your egg fast the added fat from the sauce is important to get the right ratios.
I flavored this egg fast custard with this caramel flavored extract that I found at our local Walmart, but you could do maple, or other flavors as well to change it up a bit.
By the way – this sauce would also taste amazing on your keto cream cheese pancakes.
Egg Fast Recipe – Salted Caramel Custard (Low Carb)
- Yield: 2 servings 1x
Description
A delicious caramel flavored keto egg fast custard recipe that is also lchf, low carb, and atkins diet friendly.
Ingredients
For the custard:
- 2 eggs
- 2 oz cream cheese, softened
- 3/4 cup water
- 1 1/2 tablespoons granulated sugar substitute (splenda, ideal, swerve, etc.)
- 1 1/2 teaspoon caramel extract
For the caramel sauce:
- 2 tablespoons salted butter
- 2 tablespoons granulated sugar substitute
- 1/4 teaspoons (or to taste) caramel extract
Instructions
To make the custard:
- Combine the eggs, cream cheese, water, sweetener, and caramel extract in a blender or magic bullet and blend until smooth. Pour into two greased 6 oz ramekins or bowls. Preheat the oven to 325 degrees (F). Place your ramekins in a cookie sheet and place in the oven. Pour hot water up into the cookie sheet until halfway up the sides of the ramekins. Bake for 30 minutes, or until set. Remove and chill for at least one hour (or overnight) before serving.
To make the sauce:
- Melt the butter, sweetener, and caramel flavoring in the microwave for 30 seconds (or in a saucepan on the stove until melted) and whisk together until fully blended. Divide between and pour over the two custards just before serving.
- Category: Egg Fast Recipes
Nutrition
- Serving Size: 1 custard + 1 Tbsp caramel sauce
- Calories: 273
- Fat: 27g
- Carbohydrates: 1.5g net
- Protein: 9g
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camie says
Hi Melissa, I love the the custard, YUM!!!!, I played with it and in one batch I used almond extract, and the next batch I used lemon extract. It came awesome, it was like lemon creme custard. And the Almond, well it was great also, thank you for all the recipes, I’m not hungry at all, and the week before all I wanted was sweets. Your web is the best, Camie
Mellissa Sevigny says
Thanks Camie, I bet the lemon was refreshing, can’t wait to try that one myself! :)
Alison says
I have missed pudding and creamyness while doing low carb, thank you for this, it helps!
Alison says
Wow was this good.
Alison
Allison says
I’m dying to try this, but if I wanted to swap out the water for heavy cream would I still use 1 cup?
Mellissa Sevigny says
The cream cheese plus water subs in for the heavy cream so if you make it with the heavy cream I would omit the cream cheese and use a ratio of 2 eggs, 1 cup water, 1 cup heavy cream – it will make about 6 servings that way and you’ll have to bake it a little longer – about 40 minutes. Enjoy! BTW making it this alternate way won’t be strictly egg fast friendly and will contain a lot more calories – but delicious! :)
Allison says
Thanks, I’m glad I asked! I’m considering trying the egg fast in the next couple of weeks, I just want to make this now for fun!
Lisa says
I’m going to try this with cinnamon, and some Splenda brown sugar for lunch! I know the brown sugar isn’t part of the fast but I’m interested in seeing if it effects my results at all.
Sharon says
Hi Melissa,
Thank you for posting about the egg fast! I’m starting day 5 and down 7 pounds. A MIRACLE since I have been stalled for a year after being on a round of steroids.
Any thoughts about subtituting mascarpone cheese for the cream cheese? Seems the most popular brand of cream cheese has reformulated and is now higher in carbs.
Thanks so much for all your work and your delicious recipes!!!
Veronica says
I’m curious about this as well:
Any thoughts about substituting mascarpone cheese for the cream cheese? Seems the most popular brand of cream cheese has reformulated and is now higher in carbs
Karen says
I loved this custard. I made it with home made vanilla extract instead of caramel and didn’t make the sauce to go with it and it was still delicious – even when I cheated and didn’t let one set – only enough to cool down for me to eat it warm right out of the oven :)
Lisa Dahling says
I made the Creme Brulee and it was delicious. I used Bourbon Vanilla extract since I did not have caramel but it was still fabulous.
It really helped me keep on track with the egg fast.
The fast did nothing for me, but I wasn’t really hungry so I didn’t mind trying it out.
LOVE your blog and your recipes. Thanks!
Lisa
Salt Spring Island, BC, CAnada
Mellissa Sevigny says
Ooooooh – bourbon vanilla!!! Sounds awesome, I’m going to have to look for that one and try it out ASAP! Thanks!!!!
Monica C says
This is an amazing recipe!!! It’s like creme brĂ»lĂ©e without the guilt :) Thank you so much for sharing your creative endeavours. I have made this a couple of times now and both times it has turned out delicious. Best after it’s been in the fridge a few hours. Love how the sauce hardens a little tiny bit as it hits the cold custard – gives it a crunch like the sugary brĂ»lĂ©e topping.
Love your recipes Melissa.
Claudia says
I loved this custard I had it for lunch twice this week and making more tonight .I did cook it in water bath but I did add time as mine looked to liquid y when I was ready to take it out.
kadkins says
Melissa,
I really think you’ve outdone yourself with this one. It is amazingly good.
I made a slight variation and added some cream (I’m not on an egg fast) and added some cinnamon to the butter sauce in lieu of caramel extract.