Craving a rich and creamy alfredo but want to keep carbs low? This Low Carb Zucchini Noodle Alfredo delivers all the indulgent flavor of the classic dish with a fraction of the carbs. Made with spiralized zucchini and a velvety parmesan cream sauce, it's a guilt-free comfort food that comes together quickly.
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Each serving packs a punch of flavor and nutrients, with only 22g net carbs (and even less if you choose a low-carb milk). The sauce is thickened naturally with cream cheese and parmesan, so you get a luscious texture without any flour. Plus, it's ready in just 20 minutes from start to finish, making it perfect for busy weeknights.
Whether you're following a low-carb diet or simply looking for a lighter take on a favorite, this dish is sure to become a regular in your rotation. Serve it as a main course or as a side to grilled chicken or shrimp for extra protein.
Why You'll Love This Recipe
About the Ingredients
4 medium zucchini (about 1.5 lbs / 680g)
Spiralized into noodles. Look for firm, medium-sized zucchini; if you don't have a spiralizer, use a vegetable peeler to make ribbons.
2 tablespoons (28g) unsalted butter
Use salted butter if you prefer, but adjust salt in the sauce accordingly. You can substitute with olive oil for a dairy-free option.
2 cloves garlic, minced
Fresh garlic is best. If using pre-minced, use about 1 teaspoon.
1 cup (240ml) heavy cream
For a lower fat version, use half-and-half, but the sauce will be thinner. For dairy-free, use full-fat coconut cream.
1/2 cup (50g) grated Parmesan cheese
Freshly grated parmesan melts better than pre-shredded. You can also use pecorino romano for a sharper flavor.
2 oz (56g) cream cheese, softened
Adds creaminess and helps thicken the sauce. Make sure it's softened to avoid lumps.
1/4 teaspoon salt
Adjust to taste. Use sea salt or kosher salt.
1/4 teaspoon black pepper
Freshly ground is best.
1/8 teaspoon ground nutmeg
Optional but adds a classic alfredo flavor. You can omit if you don't have it.
2 tablespoons chopped fresh parsley (for garnish)
Optional, for freshness. You can also use basil or chives.
Tips & Tricks
Don't overcook the zucchini noodles
they release water and become soggy. Sauté them for just 2-3 minutes until tender-crisp.
- If your sauce is too thick, add a splash of pasta water or milk to reach desired consistency. If too thin, let it simmer a bit longer.
- To prevent a grainy sauce, remove the pan from heat before adding the parmesan, and stir until fully melted.
- Use a large skillet to avoid overcrowding the zucchini, which can cause them to steam instead of sauté.
Pro Tips
Step-by-Step Instructions
1. Spiralize the Zucchini
Trim the ends of the zucchini and spiralize into noodles using a spiralizer. If you don't have one, use a julienne peeler or vegetable peeler to create ribbons. Set aside on paper towels to absorb excess moisture.
2. Melt Butter and Sauté Garlic
In a large skillet over medium heat (350°F / 175°C), melt the butter. Add the minced garlic and sauté for 1 minute until fragrant, but not browned.
3. Make the Alfredo Sauce
Reduce heat to low (250°F / 120°C). Pour in the heavy cream and add the softened cream cheese. Whisk until the cream cheese is melted and the sauce is smooth. Cook for 2-3 minutes, stirring constantly, until the sauce thickens slightly and coats the back of a spoon.
4. Add Parmesan and Seasonings
Remove the pan from heat. Stir in the grated Parmesan cheese, salt, pepper, and nutmeg. Continue stirring until the cheese is fully melted and the sauce is creamy. If the sauce seems too thick, add a tablespoon of water or milk.
5. Cook the Zucchini Noodles
Return the skillet to medium-high heat (400°F / 200°C). Add the zucchini noodles to the sauce. Toss gently with tongs to coat the noodles evenly. Cook for 2-3 minutes, just until the noodles are heated through and tender-crisp. Do not overcook.
6. Serve and Garnish
Remove from heat. Taste and adjust seasoning if needed. Serve immediately, garnished with chopped parsley and extra Parmesan if desired.
Delicious Variations
- Add grilled chicken or shrimp for a protein-packed meal.
- Sauté mushrooms or spinach with the garlic for extra veggies.
- Use a blend of parmesan and asiago for a sharper flavor.
How to Store Low Carb Zucchini Noodle Alfredo
Refrigerator
Store in an airtight container in the fridge for up to 2 days.
Freezer
Freezing is not recommended as the zucchini will become watery and mushy.
Reheating
Reheat gently in a skillet over low heat, adding a splash of cream or milk to refresh the sauce.
Frequently Asked Questions
Q: Can I make this dairy-free?
Yes, use olive oil or vegan butter, full-fat coconut cream or unsweetened almond milk, and dairy-free cream cheese and parmesan. The sauce will be slightly different but still creamy.
Q: How do I prevent zucchini noodles from getting watery?
Salt the spiralized zucchini and let it sit for 10 minutes, then pat dry with paper towels. Also, cook them quickly over high heat and don't overcook.
Q: Can I use store-bought spiralized zucchini?
Absolutely, look for fresh spiralized zucchini in the produce section. Just pat them dry before cooking.
Q: Is this dish keto-friendly?
Yes, with about 22g net carbs per serving, it fits into most keto diets. For a stricter version, use a lower-carb cream and reduce the amount of zucchini.
I hope you love this Low Carb Zucchini Noodle Alfredo as much as I do! If you try it, let me know in the comments below. Don't forget to share your creations on social media and tag me. Happy cooking!
Low Carb Zucchini Noodle Alfredo
Low Carb Zucchini Noodle Alfredo is a creamy, cheesy pasta alternative ready in 20 minutes, perfect for a satisfying keto-friendly meal.
🧂 Ingredients
- 4 medium zucchini (about 1.5 lbs / 680g)
- 2 tablespoons (28g) unsalted butter
- 2 cloves garlic, minced
- 1 cup (240ml) heavy cream
- 1/2 cup (50g) grated Parmesan cheese
- 2 oz (56g) cream cheese, softened
- 1/4 teaspoon salt
- 1/4 teaspoon black pepper
- 1/8 teaspoon ground nutmeg
- 2 tablespoons chopped fresh parsley (for garnish)
📋 Instructions
- 1Spiralize the Zucchini — Trim the ends of the zucchini and spiralize into noodles using a spiralizer. If you don't have one, use a julienne peeler or vegetable peeler to create ribbons. Set aside on paper towels to absorb excess moisture.
- 2Melt Butter and Sauté Garlic — In a large skillet over medium heat (350°F / 175°C), melt the butter. Add the minced garlic and sauté for 1 minute until fragrant, but not browned.
- 3Make the Alfredo Sauce — Reduce heat to low (250°F / 120°C). Pour in the heavy cream and add the softened cream cheese. Whisk until the cream cheese is melted and the sauce is smooth. Cook for 2-3 minutes, stirring constantly, until the sauce thickens slightly and coats the back of a spoon.
- 4Add Parmesan and Seasonings — Remove the pan from heat. Stir in the grated Parmesan cheese, salt, pepper, and nutmeg. Continue stirring until the cheese is fully melted and the sauce is creamy. If the sauce seems too thick, add a tablespoon of water or milk.
- 5Cook the Zucchini Noodles — Return the skillet to medium-high heat (400°F / 200°C). Add the zucchini noodles to the sauce. Toss gently with tongs to coat the noodles evenly. Cook for 2-3 minutes, just until the noodles are heated through and tender-crisp. Do not overcook.
- 6Serve and Garnish — Remove from heat. Taste and adjust seasoning if needed. Serve immediately, garnished with chopped parsley and extra Parmesan if desired.
