Spread zucchini noodles on paper towels and blot well to remove excess moisture.
Pat steak dry. Toss with salt, pepper, and smoked paprika to coat.
Heat olive oil in a large skillet over medium-high heat until shimmering.
Sear steak in two batches, 2–3 minutes per batch, until browned. Transfer to a plate.
Reduce heat to medium. Melt butter, then stir in garlic and red pepper flakes for 30 seconds.
Pour in beef broth and lemon juice. Scrape up browned bits and simmer 1 minute. Stir in Italian seasoning.
Add zucchini noodles and toss just until barely tender, 1–2 minutes. Do not overcook.
Return steak and juices to the pan. Toss with Parmesan and parsley. Adjust seasoning and serve hot.
Notes
Variation: Swap sirloin for flank or ribeye, or try shrimp for a faster seafood spin. Add mushrooms or cherry tomatoes with the zucchini for extra texture.Tips: Keep zoodles crisp by blotting well and cooking briefly. For dairy-free, use ghee and skip the Parmesan. Leftovers keep 1 day in the fridge; rewarm gently to avoid soggy noodles.This recipe is an original creation inspired by classic Garlic Butter Steak Zucchini Noodles flavors. All ingredient ratios and instructions are independently developed.