Prep Time: 10 minutes
Cook Time: 12 minutes
Total Time: 22 minutes
Servings: 6
Preheat oven to 400˚F.
Slice ends off of potatoes and peel. Cut each potato crosswise in half into 2-inch cylinders.
Heat olive oil in a large cast iron skillet (or oven-safe skillet) over medium heat until hot and shimmering. Add potatoes in a single layer, season with salt and pepper.
Cook until golden brown on one side, about 6 minutes. Flip each potato, season with salt and pepper and cook until golden brown on the other side, about 6 minutes more.
Add butter to the skillet. Add broth and sprigs of rosemary, thyme, and smashed garlic cloves to skillet. Bring to boil and spoon broth mixture over potatoes.
Bake until tender about 30 minutes.
Serve hot in the skillet or transfer to a serving plate. Spoon pan sauce over potatoes and garnish with fresh thyme and rosemary, if desired.