Product Recall: One SKU of Oscar Mayer Classic Wieners due to possible mislabeling. Click Here.
TOSS meat with steak sauce; place in slow cooker. Top with onions and tomatoes; cover with lid.
COOK on LOW 9 to 10 hours (or HIGH 4 to 5 hours).
MIX flour and water. Stir into meat mixture; cook, covered, 5 min. or until sauce is thickened, stirring occasionally.