Preheat oven to 425°F (220°C).
Cut potatoes into bite-sized pieces.
In a large bowl, toss potatoes with olive oil, rosemary, garlic, salt, and pepper until well coated.
Spread potatoes in a single layer on a baking sheet.
Roast in the preheated oven for about 35-40 minutes, or until potatoes are golden brown and crispy, stirring halfway through cooking.
Serve hot and enjoy!
