Boil pasta in salted water until al dente. Reserve 1 cup pasta water, then drain.
Heat 1 tbsp olive oil in a large skillet over medium-high heat.
Season steak with salt and pepper and sear quickly for 1–2 minutes per side until browned. Remove and set aside.
In the same skillet, add remaining olive oil.
Brown mushrooms for 3–5 minutes.
Add broccoli and garlic and sauté for about 3 minutes.
Reduce heat to low.
Stir in Greek yogurt, Parmesan, Italian herbs, and ½ cup pasta water. Mix until smooth.
Add pasta and steak back into the skillet.
Toss well and add more pasta water if needed to loosen the sauce.
Garnish with fresh parsley and extra Parmesan if desired. Serve immediately.
