Preheat the oven to 400 degrees F (200 degrees C).
Combine potatoes, olive oil, garlic, rosemary, sea salt, and pepper in a bowl. Toss until potatoes are covered and garlic is evenly distributed. Transfer to a rimmed baking sheet.
Bake on the bottom rack of the preheated oven, shaking every 5 minutes to prevent burning, until fork-tender, about 20 minutes.
Dry potatoes thoroughly after rinsing or oil will not stick. Tastes best with olive oil.
Marinate for best flavor.
Cooking time may vary depending on size of the potatoes.I have used this recipe with different temperatures, just keep an eye on them as they do not take long to cook all the way through.
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