Preheat your oven to 400°F (200°C).
Scrub the Russet potato thoroughly, prick it several times with a fork, rub with olive oil and a pinch of sea salt, then bake for 45-50 minutes until the center is soft.
While the potato is baking, brown the ground turkey in a non-stick skillet over medium heat until fully cooked.
Season the turkey with garlic powder, onion powder, sea salt, and black pepper, stirring well to combine.
Steam the broccoli florets for 3-4 minutes until they are bright green and tender-crisp, then finely chop them.
Once the potato is done, slice it in half lengthwise and carefully scoop out most of the flesh into a mixing bowl, leaving a thin shell of potato skin.
Mash the potato flesh with the non-fat Greek yogurt until smooth, then fold in the cooked turkey and chopped broccoli.
Spoon the mixture back into the potato skins and top with shredded sharp cheddar cheese.
Return the potato boats to the oven for 3-5 minutes until the cheese is melted and bubbly.
Garnish with freshly sliced green onions and serve immediately.