Smashed Potato Soup
3 1/2 pounds potatoes, peeled and cut into 3/4-inch cubes
1/2 cup chopped yellow and/or red sweet pepper
1 1/2 teaspoons bottled roasted garlic
1/2 teaspoon ground black pepper
4 1/2 cups chicken broth
1/2 cup whipping cream, half-and-half, or light cream
1 cup shredded cheddar cheese (4 ounces)
1/2 cup thinly sliced green onions
Sliced green onions (optional)