In large bowl, mix 2 tablespoons of the olive oil, 1/2 teaspoon of the teaspoon salt, 1/4 teaspoon of the pepper and 1 tablespoon of the rosemary. Add potatoes; toss to coat. Place potatoes skin side down in single layer on pan. Roast 23 to 25 minutes or until tender when pierced with a fork. Remove from oven; stir.