Mix all ingredients except flour and butter in 3 1/2- to 6-quart slow cooker.
Cover and cook on low heat setting 6 to 7 hours (or high heat setting 3 to 4 hours) or until pork is no longer pink and vegetables are tender.
Mix flour and butter. Gently stir flour mixture, 1 spoonful at a time, into pork mixture until blended.
Cover and cook on high heat setting 30 to 45 minutes, stirring occasionally, until thickened.
Note: This recipe was tested in slow cookers with heating elements in the side and bottom of the cooker, not in cookers that stand only on a heated base. For slow cookers with just a heated base, follow the manufacturer’s directions for layering ingredients and choosing a temperature.