Ingredients
Scale
(Serves 4)
Pasta & sauce:
- 12 oz spaghetti (or gluten-free/low-carb pasta)
- Zest of 2 lemons (about 2 tbsp—don’t skip!)
- ½ cup fresh lemon juice (about 3–4 lemons)
- ½ cup (1 stick / 115g) unsalted butter, cut into cubes (you love buttery richness!)
- 1 cup grated Parmesan cheese, plus extra for serving
- Reserved pasta water (about 1 cup)
- Salt & black pepper to taste
Garnish:
- Fresh parsley or basil, chopped
- Lemon zest
- Red pepper flakes (optional)
Instructions
1. Cook pasta:
- Cook spaghetti 1 minute less than package directions in well-salted water.
- Reserve 1 cup pasta water before draining. Drain pasta—do not rinse.
2. Make lemon sauce:
- Return empty pot to low heat. Add butter; melt gently.
- Stir in lemon zest and lemon juice; warm 1–2 minutes (do not boil).
3. Emulsify:
- Add drained pasta to pot. Toss to coat in lemon-butter sauce.
- Gradually add ¼–½ cup pasta water, tossing constantly over low heat 2–3 minutes until sauce clings to pasta.
- Remove from heat. Stir in Parmesan until glossy and creamy.
- Season with salt and pepper to taste.
4. Serve immediately:
Top with extra Parmesan, fresh herbs, lemon zest, and red pepper flakes.
💡 Pro Tips for Perfection:
✅ Use fresh lemon juice & zest—bottled lacks brightness (roll lemons on counter first for max juice!).
✅ Low heat only—high heat curdles the sauce. Keep it gentle!
✅ Pasta water is liquid gold—starchy water emulsifies fat + cheese into silkiness.
✅ Low-sodium mastery (you love this!):
→ Skip added salt—rely on Parmesan for savoriness
→ Boost flavor with extra lemon zest and black pepper
✅ Blood sugar friendly (you love this!):
→ Use chickpea or lentil pasta (+25g protein/serving!)
→ Net carbs drop from 52g → 38g/serving
✅ Low-carb/keto option (you love this!):
→ Swap pasta for 16 oz hearts of palm pasta or zucchini noodles
→ Sauté zoodles separately 2 min; toss with sauce off-heat
→ Net carbs drop to ~8g/serving
✅ Extra richness: Finish with 1 tbsp cold butter swirled in at the end (you love buttery richness!).
✅ Make ahead: Best served fresh, but lemon-butter base keeps 2 days refrigerated. Reheat gently; toss with freshly cooked pasta.
Prep Time & Nutrition (per serving):
Prep Time: 5 min | Cook Time: 10 min | Total Time: 15 min
Calories: 480 | Protein: 18g | Net Carbs: 52g | Fats: 24g | Fiber: 3g | Vegetarian • Gluten-Free Option • Low-Sodium Adaptable • Blood Sugar Friendly • Low-Carb/Keto Option
Calories: 480 | Protein: 18g | Net Carbs: 52g | Fats: 24g | Fiber: 3g | Vegetarian • Gluten-Free Option • Low-Sodium Adaptable • Blood Sugar Friendly • Low-Carb/Keto Option