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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Hannah Knudsen says
I’m on day 3 of my egg fast and this recipe. Omg. I licked the bowl. That sauce is delicious and will definitely be making it again! Thank you!
CraftyMrsG says
I would have never guessed that my low carb pancake recipe would make egg noodles! Definitely going to try this, thank you!
Michelle says
Sorry to say that this recipe did not turn out for me at all – or at least consistency wise.It was tasty and really good but looked nothing like yours. I baked the eggs even 2 minutes longer and still, the middle was wet and soggy. Since I don’t own a microwave, I heated up the sauce on the stove and it turned out dry and more like a paste.
Marica says
Hi Mellissa. I couldn’t find Mascarpone cheese so I made it with Cream Cheese. How come there is 1 oz Mascarpone. But in the alternative version there is 2 oz cream cheese?
Loved the result anyway!!!!
Ioana says
I never had the courage to go on an egg fast but with this recipe, you got me a boost to start the fast as soon as possible. I really want to see how my body reacts :).
Kasey Edwards says
Is it 2 net carbs also of it is jist the noddles?
Sonya says
I’m on day 5 and surprisingly I’m not sick of eggs, haha! Thanks so much for all these recipes! I’m down 3.8 pounds after stalling a bit (I’ve been on keto for about 5 weeks now I think), not as big of a weight loss as I wanted, but I’ll take it! I’m down 18.2 pounds, almost halfway to my goal of 40. Thanks again for making these plans available, you’re a genius!
Erin says
I love this recipe, even when I am not on an egg fast. I started adding a pinch of Italian seasoning to the “pasta” and it really kicked it up a notch. Even my very picky 8-year-old loves this!
Amanda says
I do not understand the whole rolling/unrolling of the pasta. Could you please elaborate? I am looking forward to making this tonight and might try to skip that part, simply cutting from the pan if I can. TIA!
Mellissa Sevigny says
Amanda you can cut from the pan if you prefer – I find that taking it out whole and rolling it produces a thinner, more uniform pasta like look but it will taste the same either way so do whatever is easiest for you!
Wendy says
She doesn’t mean rolling as in rolling out a dough. She means take out the square of egg mix after it’s baked and roll it up like cinnamon rolls or a fruit roll-up. Make your slices, then unroll each noodle.
Amanda says
Just made this and wow! I want another serving… on day two of an egg fast after falling off the wagon, this is going to be made a lot in my home. Thank you for sharing :)
Jodi says
If you eat 20 carbs or less a day you are guaranteed to be in ketosis. No need to even bother with those inaccurate test stripes. I don’t understand why people torture themselves with egg fasts. If you monitor your calories then you can break stalls in weight loss. That is true on any kind of diet plan. Plus stalls are normal. Weight loss doesn’t go straight down. I lost 42lbs and no egg fasts at all. 1300 calories a day works fine, plus I needed all my calories as protein to keep cravings away and eggs just don’t have enough. Chicken breast is your best friend on a diet. I would love to try these noodles though. Noodles and chicken breast with the sauce. That would be good. Oh and some mushrooms. ;-) Thanks for recipe.
Mellissa Sevigny says
Chicken breast is high protein and low fat – actually NOT your best friend on the keto diet. Thanks for your two cents, but just because your experience has been that calorie reduction works doesn’t mean that everyone’s will. The egg fast works for a lot of people including myself. That’s just a fact.
Amanda says
@Jodie – Calorie counting doesn’t work for me, ketosis does. LCHF simplifies it too because I can go out to eat or go to a BBQ without being overly concerned about what the food was cooked in/with since these things can drastically differ and really throw off a calorie count. I personally am using the egg stall to recover from my week of vacation where I decided to indulge where I desired. I just want to jump ahead to where I left off.