Pre heat your oven to 400 degrees and line a large baking sheet with parchment paper.
Toss the broccoli, bok choy, oils, miso and ginger together in a large bowl. You'll have to use your hands to break down the Miso and rub it into the vegetables.
Place the broccoli onto the pan and bake until it just begins to brown, about 8 minutes. Remove from the oven and turn it to high broil.
While the broccoli cooks, mix together the miso butter ingredients and spread 2 tsp of the butter over the steak. Heat a large pan on medium high and saute the buttered side of the steak until it's golden, about 1-2 minutes. Watch carefully so it doesn't burn.
Place the steak, seared-side up, on the pan beside the broccoli. Broil for 4 minutes.
Remove the pan from the oven and spread 3 tsp of the butter on top of the steak. Additionally, spread the bok choy on the pan.
Broil for another 3-5 minutes, depending on the thickness of your steak/how well you like it cooked. I cooked mine to an internal temperature of 135 F for medium-rare. Once cooked, cover with tinfoil and let rest at room temperature for 5 minutes.
Spread the remaining butter over the steaks, along with a sprinkle of sesame seeds.