These hearty baked potatoes are the perfect accompaniment to Marinated Flank Steak.
Preheat oven to 400 degrees. Prick potatoes in several places with a fork. Place on a baking sheet, and bake until easily pierced with the tip of a knife, 50 to 60 minutes.
Meanwhile, make onion sour cream: In a 10-inch skillet, heat oil over medium-low heat. Add onion and cook, stirring occasionally, until translucent, 8 to 10 minutes. Transfer to a medium bowl; cool to room temperature.
Add sour cream to onion; mix to combine. Season with salt and pepper.
Cut a deep cross in the top of each potato; push ends together to open. Season with salt and pepper. Spoon some onion sour cream over each potato, and sprinkle with chives. Serve.