Lemon Butter Pasta Light

Featured in: Citrus-Bright Weeknight Plates

This bright and zesty lemon butter pasta combines tender capellini with a silky sauce made from melted butter, fresh lemon juice, and zest. Ready in just 20 minutes, it's the perfect light meal for busy evenings.

The magic happens when you toss the pasta with reserved cooking water to create a luxurious, velvety coating. Finish with grated Parmesan, fresh parsley, and a crack of black pepper for a simple yet elegant dish that feels restaurant-quality at home.

Updated on Fri, 16 Jan 2026 15:22:00 GMT
A close-up of Lemon Butter Pasta Light, featuring silky capellini tossed in a glossy lemon-butter sauce with fresh parsley and grated Parmesan. Pin it
A close-up of Lemon Butter Pasta Light, featuring silky capellini tossed in a glossy lemon-butter sauce with fresh parsley and grated Parmesan. | citrusfable.com

Summer dinners at our lakeside cabin always called for something light yet satisfying after long days swimming and kayaking. I stumbled upon this lemon butter pasta recipe one evening when our pantry was nearly bare but the lemon tree outside was heavy with fruit. The bright scent of lemon zest filled our tiny kitchen as butter melted in the pan, and something magical happened when those simple ingredients came together.

Last spring, I served this pasta when my friend Lisa spontaneously dropped by after work looking thoroughly defeated from a long day. We sat on the balcony with bowls of this sunshine-yellow pasta, watching the sunset paint the sky pink while steam curled up from our plates. By the second glass of crisp white wine and her second helping of pasta, her shoulders had finally relaxed and she was laughing again.

Ingredients

  • Capellini: Angel hair pasta is perfect here because its delicate nature absorbs the light sauce beautifully without getting lost under heavier ingredients.
  • Lemons: Always zest before juicing, and try to use unwaxed organic lemons since youre consuming the outer peel.
  • Butter: Unsalted gives you complete control over seasoning, but if you only have salted on hand, just reduce the additional salt you add later.
  • Pasta Water: That cloudy starchy water is liquid gold for creating a silky emulsion with the butter and lemon.

Instructions

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Boil the pasta:
Get your water rolling at a full boil before adding salt and pasta. For capellini, watch it closely as it cooks in just 2-3 minutes.
Make the sauce base:
As the butter melts, youll see it foam slightly before settling down. This is when youll want to add that vibrant lemon zest and juice.
Marry the pasta and sauce:
Work quickly here to toss everything together while hot. The pasta will drink up the sauce as it cools, so add splashes of that reserved pasta water if things look dry.
Finish with cheese and herbs:
The parmesan melts into the warm pasta, creating little pockets of savory goodness against the bright lemon. Fresh parsley adds that perfect green pop both visually and flavor-wise.
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My grandmother called this my sunshine pasta the first time I made it for her, clasping her hands together in that dramatic Italian way. She closed her eyes with the first bite, then pointed her fork at me and declared it reminded her of meals on the Amalfi coast where she grew up. Coming from her, who rarely offered cooking compliments, I knew Id created something special that would stay in our family recipe collection.

Perfect Pairings

While gorgeous on its own, this lemon butter pasta welcomes additions that complement without overwhelming. Ive tossed in handfuls of spring peas straight from the garden, or topped it with quickly sautéed shrimp for protein. When asparagus is in season, I slice it thin and blanch it quickly in the pasta water before adding the capellini.

Making It Ahead

This isnt a dish that benefits from sitting around, but you can prep components in advance. Zest and juice your lemons, chop the parsley, and measure out other ingredients before guests arrive. The actual cooking takes less than 10 minutes once everything is lined up and ready to go, making it surprisingly stress-free for entertaining.

Troubleshooting Tips

Even seasoned cooks can find pasta dishes temperamental sometimes, but a few key principles make this one virtually foolproof. Timing is everything with delicate capellini, which can go from perfect to mushy in seconds.

  • If your sauce seems to separate or look oily, add another splash of pasta water and toss vigorously to re-emulsify.
  • Always taste before serving and adjust salt levels, as the amount of cheese and pasta water used can affect the final seasoning.
  • For leftovers, rejuvenate with a sprinkle of water and gentle warming rather than intense heat that could break the sauce.
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This lemon butter pasta has become my signature emergency dinner, the recipe friends text me for most often, and the dish that proves simplicity executed well trumps complexity every time.

Recipe FAQs

Can I use regular spaghetti instead of capellini?

Yes, you can substitute capellini with spaghetti or any thin pasta. Keep in mind that thicker pasta may require 1-2 extra minutes of cooking time. The thinner the pasta, the faster it absorbs the delicate lemon-butter sauce.

What's the best way to zest a lemon without a zester?

A microplane or fine grater works perfectly for zesting. Alternatively, use a vegetable peeler to remove the yellow outer layer, then mince it finely with a knife. Avoid the white pith underneath, as it's bitter and will affect the flavor.

How much pasta water should I reserve?

Reserve at least 1/2 cup of pasta water before draining. The starch in this water emulsifies with the butter and lemon juice to create a silky, coating sauce that clings beautifully to the pasta.

Can I prepare this dish ahead of time?

This pasta is best served immediately while warm. However, you can prep the sauce components in advance—zest and juice the lemons, chop the parsley, and measure the butter. Cook and assemble just before serving for optimal flavor and texture.

What protein pairs well with this dish?

Grilled shrimp is a classic pairing, adding protein without overpowering the delicate lemon flavors. Pan-seared scallops, grilled chicken breast, or even crispy pancetta work wonderfully. Keep portions modest to let the bright pasta shine.

Is this suitable for a vegan diet?

Yes! Substitute vegan butter for traditional butter and skip the Parmesan, or use a plant-based alternative. The lemon-based sauce remains vibrant and satisfying. Nutritional values will differ from the original.

Lemon Butter Pasta Light

Delicate angel hair pasta tossed in a silky lemon-butter sauce with fresh parsley and Parmesan.

Prep time
10 minutes
Time to cook
10 minutes
Overall time
20 minutes
Created by Noah Roberts


Skill Level Easy

Cuisine Italian

Serves 4 Portions

Diet info Vegetarian

What You'll Need

Pasta

01 12 oz capellini (angel hair pasta)
02 1 tablespoon salt (for pasta water)

Sauce

01 1/4 cup unsalted butter
02 2 large lemons, zested and juiced (about 1/4 cup juice)
03 2 tablespoons extra-virgin olive oil

Finishing

01 1/4 cup grated Parmesan cheese, plus more for serving
02 2 tablespoons chopped fresh parsley
03 Freshly ground black pepper, to taste
04 Salt, to taste

Directions

Step 01

Cook the Pasta: Bring a large pot of salted water to a boil. Add the capellini and cook according to package instructions until al dente (typically 2–3 minutes). Reserve 1/2 cup of pasta cooking water, then drain the pasta.

Step 02

Prepare the Lemon Butter Sauce: While the pasta cooks, melt the butter in a large skillet over medium heat. Add the olive oil, lemon zest, and lemon juice. Stir to combine and let it warm through for 1–2 minutes.

Step 03

Combine Pasta and Sauce: Add the drained capellini to the skillet. Toss to coat the pasta evenly, adding reserved pasta water as needed to create a silky sauce.

Step 04

Add Finishing Touches: Remove from heat. Stir in the grated Parmesan, chopped parsley, and season with salt and freshly ground black pepper to taste.

Step 05

Serve: Divide among plates, garnish with extra Parmesan and parsley if desired, and serve immediately.

Tools Needed

  • Large pot
  • Colander
  • Large skillet
  • Zester or microplane
  • Citrus juicer
  • Tongs

Allergy Advice

Review ingredients for allergens and speak with a healthcare provider if unsure.
  • Contains: Milk (butter, Parmesan), Wheat (pasta)

Nutritional Details (per serving)

This nutrition info is an estimate and not medical advice.
  • Total Calories: 410
  • Fats: 17 grams
  • Carbohydrates: 54 grams
  • Proteins: 11 grams