SuperGreens Spaghetti with Steak & Garlicky Parsley Sauce

Cooking Steps
Blend parsley with tomatoes, vinegar, oil, garlic, salt, pepper and pepper flakes in a food processor or blender until a pesto-like consistency; set aside.
Cook spaghetti according to package directions; measure out and reserve 1/2 cup (125 mL) pasta water before draining.
Meanwhile, heat an oiled grill-pan or cast iron skillet over medium-high heat. Brush 2 tbsp (30 mL) parsley mixture over steak. Brush mushrooms with an additional 2 tbsp (30 mL) mixture.
Sear steak for 3 to 4 minutes per side for medium (or until of preferred doneness). Rest for 5 minutes. Meanwhile, sear mushrooms for 3 minutes per side or until tender. Slice steak and mushrooms thinly.
Toss hot cooked spaghetti with mushrooms, remaining sauce and pasta water until well combined. Fan steak over top and garnish with blue cheese or Parmesan (if using).
Tips:
– To clean the mushrooms, remove stems and wipe tops. Use a spoon to scrape out and discard the dark gills.
– Measure out and keep separate the parsley sauce used to brush over the steak to avoid cross contamination.
– Steak and mushrooms can be prepared on an outdoor grill if preferred.