How to Make It
Melt 1 tablespoon butter in a Dutch oven over medium. Cook sausage 6 minutes or until browned; remove sausage with a slotted spoon, and drain on paper towels, reserving drippings in Dutch oven. Add remaining butter to Dutch oven. Gradually whisk in flour; cook, whisking constantly, until flour is a milk chocolate color (about 25 minutes).
Stir in green bell pepper and next 5 ingredients; cook, stirring constantly, 15 minutes or until vegetables are tender. Gradually add broth, stirring until combined. Add tomatoes, oregano, thyme, and bay leaves. Bring to a light boil; reduce heat to low, and simmer, stirring occasionally, 30 minutes or until slightly thickened.
Return sausage to pan; simmer, stirring occasionally, 15 minutes. Stir in chicken. Remove and discard bay leaves before serving.