This, the original and best Keto Fettuccini Alfredo recipe, is so creamy and satisfying that it will make sticking to your 5 day egg fast a breeze! In fact this keto Fettuccini Alfredo is so good that you may end up adding it to your weekly rotation!

I made it! 5 days on the IBIH Keto Egg Fast Diet and I’m down a total of 7.4 lbs as of this morning! This Keto Egg Fast Fettuccini Alfredo recipe is a keeper, and definitely contributed to my successfully staying on the keto egg fast for the full 5 days!
I’m already deep in ketosis (the strips are purple which NEVER happens,) from this keto egg fast, and I’m hoping that maintaining my macros at a really high fat content, very low carb, and less protein than usual rate will keep the weight from coming back on overnight.
I’ll be reporting my weight fluctuations daily via Instagram and Facebook, but won’t have time to post anything here on the blog for the next few days. I’ll update you in a post sometime this weekend though, with a 7 day Egg Fast menu plan (5 days on, 2 days off) soon to follow.
What I Ate on Day Five of the Keto Egg Fast Diet
7 eggs
2 Tbsp MCT oil
5 Tbsp butter
1 Tbsp mayonnaise
4 oz cream cheese
2 string cheese
1 oz cheddar
1 Tbsp grated parmesan
120 oz spring water
I’m not going to lie, yesterday was ROUGH! By about noon the idea of eating another egg in any form was making me want to hurl. I was cranky, had a headache, and really wanted to quit this keto egg fast. It didn’t help that Mr. Hungry was churning out delicious smelling pizzas in our wood-fired oven either! This keto egg fast fettuccini alfredo recipe saved the day for sure!

It’s not easy to get the right consistency in a flourless keto “pasta,” and believe me I’ve tried. I finally hit on a combo that provides just the right aldente “bite” that feels like eating the real thing. Not too mushy, perfectly pliable, and doesn’t fall apart in the sauce.
And the sauce – oooooh the sauce! This keto egg fast fettuccini alfredo sauce is so creamy and cheesy that I prefer it over the flour-laden real thing! And it’s so easy to make – it literally takes less than two minutes, and can be used to dress up chicken, veggies, pretty much any savory dish will be improved with a heaping tablespoon of this easy keto egg fast alfredo sauce!!!

I’m writing this keto fettuccini alfredo recipe as a single serving because the pasta doesn’t reheat well – I hit it in the microwave while in the sauce because it got cold while taking the photos, and the “pasta” got a little tough – not horrible, just not as good as fresh.
The sauce for this keto fettuccini alfredo recipe reheats fine though – so you can make extra of that if you want, so you have it on hand. This is incredibly rich, so if you can’t eat it all, then just be sure to reheat it very gently for as little time as possible, so your keto noodles don’t get too tough.
Keto Fettuccini Alfredo
- Total Time: 15 minutes
- Yield: 1 serving 1x
- Diet: Diabetic
Description
Keto Fettuccini Alfredo that tastes like the real thing and works for a regular low carb diet or the 5 day keto egg fast.
Ingredients
- 2 eggs
- 1 oz cream cheese
- pinch of salt
- pinch of garlic powder
- 1/8 teaspoon black pepper
- 1 oz Mascarpone cheese
- 1 tablespoon grated parmesan cheese
- 1 tablespoon butter
Instructions
- Blend the eggs, cream cheese, salt, garlic powder, and pepper in a magic bullet or blender.
- Pour into a butter-greased 8 x 8 pan.
- Bake at 325 degrees Fahrenheit for 8 minutes or until just set.
- Remove and let cool for about 5 minutes.
- Using a spatula, gently release the sheet of “pasta” from the pan.
- Roll it up and slice with a sharp knife into 1/8 inch thick slices.
- Gently unroll and set aside.
- Combine the mascarpone, parmesan cheese, and butter in a small bowl.
- Microwave on high for 30 seconds.
- Whisk.
- Microwave on high another 30 seconds.
- Whisk again until smooth (this may take a minute because the sauce will have separated – keep whisking and it will come back together!)
- Add the pasta to the hot sauce and toss gently.
- Serve immediately with more freshly ground black pepper if desired.
Notes
Approximate net carbs per serving = 2g
Alternative Sauce Recipe:
As an alternative to the mascarpone, you can make this sauce in the same method with 2 oz cream cheese, 2 Tbsp heavy whipping cream, 1 Tbsp parmesan, 1 Tbsp butter – it will taste amazing, but is not technically legal on the Egg Fast due to the heavy whipping cream. I doubt it will make a big difference in your results though, so if it’s what you have on hand, go for it!
- Prep Time: 5 minutes
- Cook Time: 10 minutes
- Category: Egg Fast Recipes
- Method: microwave
- Cuisine: Italian
Nutrition
- Serving Size: Approximately 1 cup
- Calories: 491
- Fat: 47g
- Carbohydrates: 2g net
- Protein: 19g
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Jessica says
How far in advance do you think you can make the ‘pasta’?
Mellissa Sevigny says
As I mentioned, it’s best fresh, if you have to reheat it can get tough.
Monique says
you mentioned that using heavy cream is not in the egg fast…I just made homemade Mascarpone cheese, using 2 cups of cream and lemon juice??
Cathy says
I had the same question. Allot of the eggfast recipes use Mascarpone cheese. When I looked it up it is made of heavy whipping cream. So why would it not be eggfast legal?
monika says
just use cream cheese!
Lois Fitgzgerald says
everything reheated ib the Microwave gets tough. Take time to heat your oven and heat it in there OR heat slowly in a pan on the stovn
Erika h says
How would I cook it on the stove? My oven is broken at the moment….
Jaanai says
Thank u so much for all the ideas. Do u have an alternative for blue cheese in the crepes?
Thanx again!
Jennifer says
I used feta instead of blue cheese and it was yummy!!
Asia says
Oh. My. GOD. Yes, please. Just… Yes.
Becki says
Thank you so much for all that you do! I am so excited and looking forward to the day egg fast meal plan!!
Jessie says
i wonder if you could make a faux rice pudding with these?
Jan says
I don’t have the mascarpone, so I’m going to try your alternate recipe. The picture really looks like fettuccine alfredo. Thanks!
monika says
just use cream cheese!
Mihir says
for the pasta, soften the cream cheese first? or not necessary?
Allyson says
Loving all this talk and posts on egg fast (fat fast for me)…I’m on second day and I had only lost .4 of one pound this morning! WTH? UGH. Can’t help but be anxious to see what happens today/tonight and scale tomorrow. Hmmmm……
Susan says
Don’t weigh ever day! Demoralizing. Use fit of pants. Weight can vary by several pounds a day naturally.
GREAT RECIPE. Thank you.
Marion@Life Tastes Good says
Oh I am making this!! That ‘pasta’ is just too easy – I’m so excited!!
Lisa Thomas says
Heart be still! I will definitely have to give this one a try.
Pam says
You, lady, are the bomb!
Amber says
I second that, this was a hit for the entire family. We have been missing pasta like dishes since going grain and gluten free in January. This was a perfet fit and very filling, Thank you for your efforts, they are not in vain.