Bake these potatoes until they are a beautiful golden brown color.
Cut sweet potatoes and red potatoes into 2-inch pieces. Place on a jellyroll pan coated with cooking spray. Drizzle potatoes with oil; sprinkle with rosemary, salt, and pepper, tossing to coat.
Bake at 450° for 35 to 45 minutes or until golden brown, gently stirring potatoes once.
Excellent! I love the combination of sweet potatoes and red potatoes. I added a couple cloves of minced garlic. Yum!