First, place the prosecco, maple syrup, juice of 2 clementines, salt, pepper, and oil in a bowl and whisk to combine. Set aside to use later.
Next, salt and pepper the steak. Place the steak on the sheet pan and put on the top rack of a preheat oven at 500 degrees. Cook the steak for 4 minutes one side and then flip the steak for 4 minutes the other side. Let the steak rest for 10 minutes before you cut into slices.
Now, place the pecan in the oven wrapped in tin foil for 5 minutes to toast.
Next, peal and segment the rest of the clementines. Mix a couple tablespoons of the Prosecco dressing and place on a plate.
Finally, cut the steak in slices and pour a couple tablespoons of the Prosecco dressing on the steak. Enjoy!