Preheat your oven to 400°F and line a small baking sheet with parchment paper.
Scrub the Russet potato thoroughly, pierce it several times with a fork, and bake for 45 to 60 minutes until the skin is crisp and the center is tender.
While the potato is roasting, heat the olive oil in a medium skillet over medium-high heat.
Add the ground turkey to the skillet along with the sea salt, black pepper, and garlic powder.
Cook the turkey, breaking it into small crumbles with a spatula, for 7 to 9 minutes until fully browned and cooked through.
Steam the broccoli florets in a steamer basket or a microwave-safe bowl with a splash of water until they are bright green and fork-tender.
Once the potato is finished, slice it down the center and fluff the interior flesh with a fork.
Stuff the potato with the cooked ground turkey and steamed broccoli florets.
Top the potato with the shredded sharp cheddar cheese, a dollom of Greek yogurt, and a sprinkle of sliced green onions before serving.