Preheat oven to 400°F (200°C). Combine 3 tbsp olive oil, liquid smoke, garlic, Club House La GrilleⓇ dry spices, and thyme in a small bowl; set aside. Using a mallet pound the steak until 1 inch thick. Season all over with the marinade. Reserve for 10 minutes.
Heat a cast iron or large sautoir pan over medium heat. Add 2 tbsp olive to pan, add marinated steak to the pan, sear and brown on both sides. Transfer pan to oven for 6 minutes. Halfway through the cooking process add a tablespoon of butter and baste. Continue to roast for 6 minutes or until a digital instant-read thermometer inserted sideways into centre of steak reads 145°F (63°C) for medium-rare doneness at the least.
Remove from the oven and cover with foil for 5 minutes. Slice into 6 portions, 3 slices per portion.
Plate each portion of flank steak with a spoonful of parsnip puree in the centre of the plate, a butternut squash stack. Drizzle with Marsala Prune Reduction and dollop of the Chimichurri Sauce over the steak. Make sure the doneness of the steak is visible. Garnish with roasted shallots, charred cherry tomatoes, and seasoned broccolini.