• Preheat the oven to 450 degrees F. Bring a large pot of salted water to a boil.
• Stir together the butter, olive oil, chives and some salt and pepper in a small bowl.
• Place a potato between the handles of 2 wooden spoons or 2 chopsticks. Slice the potato into thin slices, leaving 1/4 inch at the bottom unsliced; the spoon handles will prevent you from slicing the potato all the way through. Repeat with the remaining potatoes.
• Put the potatoes on a baking sheet and brush on the butter mixture, making sure to get in between all the slices. Bake until tender and crisp, 55 to 60 minutes. basting halfway through with the reserved melted butter.

Bacon Option

• Lay the bacon pieces on a baking sheet and freeze until hard, about 30 minutes. Meanwhile, preheat the oven to 350 degrees F. Bring a large pot of salted water to a boil.
• Insert 3 pieces of the frozen bacon into the cuts of each potato, spacing the bacon evenly and letting it poke out of the top.