Chicken and Corn Chowder

Name: Chicken and Corn Chowder
Ingredients: 3 tablespoons canola oil; 3 medium onions diced; 1/4 cup flour; 9 cups low sodium chicken broth; 1 3/4 pounds peeled seeded butternut squash, cut into 1-inch cubes; 1 1/2 pounds potatoes peeled and cut into 1-inch cubes; 1 tablespoon dried thyme; 34 ounce bag frozen corn; 1 cup half and half or heavy cream if preferred - see my note; 3 cups cooked chicken breast shredded; 1 bunch scallions chopped; 2 medium red bell peppers seeded and diced; 1/2 cup fresh cilantro minced; Kosher salt and fresh ground pepper.