Ultimate Twice Baked Potatoes

Ingredients

• 4 large russet potatoes (about 2 pounds or 900 grams)
• 2 tablespoons olive oil (30 ml)
• Salt, to taste
• ½ cup sour cream (120 ml)
• 1 cup shredded cheddar cheese (about 100 grams)
• ¼ cup whole milk (60 ml)
• 4 tablespoons unsalted butter (56 grams)
• 1 teaspoon garlic powder (5 grams)
• ¼ teaspoon black pepper (1 gram)
• ¼ cup chopped green onions or chives (about 15 grams)