In a 4- to 6-quart saucepan or stockpot, cook sausage over medium-high heat, stirring frequently, until thoroughly cooked and no longer pink. Stir in drained tomatoes and green chiles and the mushrooms; cover and cook 2 minutes. Stir in cheese spread and condensed mushroom soup; reduce heat to medium and cook uncovered until melted, stirring frequently. Transfer to serving bowl, chafing dish or slow cooker. Serve hot with chips, crackers or crisps.