1. Cook pasta:

1. Cook pasta 1 minute less than package directions in well-salted water.
2. Reserve 1 cup pasta water before draining. Drain pasta—do not rinse.

2. Sauté mushrooms:

1. Heat olive oil and 2 tbsp butter in a large skillet over medium-high heat.
2. Add mushrooms in a single layer (work in batches if needed). Cook 8–10 minutes until deeply golden and liquid evaporates.
3. Reduce heat to medium-low. Add remaining 2 tbsp butter, garlic, and red pepper flakes; cook 2–3 minutes until fragrant (don’t brown garlic!). Season with salt and pepper.

3. Emulsify sauce:

1. Add drained pasta to skillet. Pour in ½ cup pasta water.
2. Toss constantly over medium heat 2–3 minutes until sauce clings to pasta (add more pasta water 1 tbsp at a time if dry).
3. Optional creamy boost: Stir in softened cream cheese until melted.
4. Remove from heat. Stir in Parmesan and parsley until glossy.

4. Serve immediately:

💡 Pro Tips for Perfection:
✅ Don’t crowd the mushrooms—overcrowding = steamed, not seared. Cook in batches for golden edges.
✅ Pasta water is liquid gold—starchy water emulsifies fat + cheese into silkiness (no cream needed!).
✅ Low-sodium mastery (you love this!):
→ Skip added salt—rely on Parmesan for savoriness
→ Boost umami with 1 tsp mushroom powder + extra garlic
✅ High-protein boost (you love this!):
→ Add 1 cup white beans with mushrooms (+7g protein/serving)
→ Top with grilled chicken or shrimp (+20g protein)
✅ 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 mushroom sauce off-heat
→ Net carbs drop from 52g → 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 mushroom base keeps 3 days refrigerated. Reheat gently; toss with freshly cooked pasta.

Prep Time & Nutrition (per serving):