Crispy Smashed Potatoes. Boil potatoes until completely cooked, cool 10 min. Then toss potatoes with 3 tbsp olive oil making sure each is coated with oil. Pour onto a cookie sheet. Take a cup and smash each potato to about 1/3 1/2 in thick. Drizzle another 3 tbsp olive oil on the potatoes, sprinkle with garlic salt pepper. Place the potatoes in your 500 degree oven for 30 minutes. Can add shredded parmesan and bake up to 15 minutes more.