Remove halibut from packaging and thaw covered on a plate in the refrigerator overnight. Once thawed, pat dry with paper towels.
Preheat oven to 350 degrees Fahrenheit.
Preheat medium-sized pan over medium-high before adding olive oil.
Drizzle halibut with olive oil, then season with salt and pepper.
Add halibut to the pan and sear each side for 2 minutes before removing, then transfer to an oven-safe baking sheet.
Place the baking sheet in the oven for 4-5 minutes, or until the internal temperature reaches 145 degrees Fahrenheit, as indicated by a food thermometer.
Steam or bake broccolini and finish with butter, salt, and pepper.
Pour Creamy White Finishing Sauce into a pan over medium-high and whisk until heated.
Assemble: Place the halibut, broccoli, and orzo in a medium-sized bowl, then pour the sauce over the top.