Preheat oven to 400°F. Line a baking sheet with parchment paper.
Scrub and dry the potatoes, then rub the skins with olive oil. Place potatoes on the baking sheet and bake for 1 hour, or until soft. Remove from the oven and set aside to cool.
4 medium russet potatoes, 1 teaspoon olive oil
Once the potatoes are cool to the touch, slice them in half lengthwise. Carefully scoop out the potato innards and place them into a large bowl, leaving a thin rim around the insides of the skins. Return the skins to the baking sheet.
To the potato innards, add butter, heavy cream, and seasonings. Use a potato masher or hand mixer to blend until smooth. Using a rubber spatula, fold in the broccoli and half of the cheese.
4 tablespoons unsalted butter, ½ cup heavy cream, ¾ teaspoon garlic powder, ½ teaspoon onion powder, ½ teaspoon kosher salt, ½ teaspoon ground black pepper, 1½ cups steamed broccoli, 1½ cups freshly shredded cheddar cheese
Divide the filling evenly among the potato shells, then top with the remaining cheese. Bake 20-25 minutes, or until the cheese is melted and the potatoes are heated through. Broil for 1-2 minutes if desired.
Chopped chives