Product Recall: One SKU of Velveeta Cheesy Skillet Singles Due to Undeclared Soy: Click Here
COOK franks as directed on package. Meanwhile, melt margarine in medium skillet on medium heat. Add mushrooms; cook 5 to 7 min. or until tender, stirring occasionally.
DIVIDE mushrooms in half (in skillet). Top each half with cheese slice; cook on low heat 2 min. or until melted.
FILL buns with franks and mushrooms.