01 - In a saucepan, gently heat the shredded cheese over low to medium heat, stirring frequently until fully melted.
02 - Add the diced tomatoes with green chilies and ranch dressing to the melted cheese. Stir continuously until the mixture becomes smooth and creamy.
03 - Transfer the warm queso to a serving dish, garnish with sliced jalapeños if desired, and serve immediately with tortilla chips, pretzels, or fresh vegetable sticks.