Roasted Garlic Potato Soup without refried

3 -5 whole garlic heads , unpeeled 3 1/2 tablespoons olive oil , divided 1 1/4 teaspoons salt , divided 1 teaspoon fresh ground black pepper , divided crushed[...]

4 cups Swanson chicken broth 6 medium red potatoes, cut into cubes (about 4 cups) 2 medium carrots , diced 1 medium white onion, chopped (about 1/2 cup) 3[...]