Instructions: Before you start cooking, heat the oven to 375F 190C. Clean the potatoes well and poke them a few times with a fork. For 45 to 60 minutes, or until soft, bake the potatoes right on the oven rack. In a large bowl, scoop out the flesh from the potatoes after cutting them in half lengthwise. Make sure to leave a thin layer of potato inside the skins. In a bowl, mash the potato flesh. Next, add the sour cream, milk, butter, salt, and pepper, and mix everything together until it's well split. Add the steamed broccoli florets and half of the cheddar cheese that has been shred. Add the mashed potatoes to the inside of each potato skin and put them in a baking dish. Cover the filled potato skins with the rest of the shredded cheddar cheese. Put it in an oven that has already been heated for 20 to 25 minutes, or until the cheese melts and bubbles. If you want, you can serve it hot with chopped green onions on top.