1. Rinse and thoroughly dry vegetables. Trim broccoli and cauliflower floret stems.
2. Arrange broccoli on serving platter to form tree shape and add tomatoes to form garland.
3. Arrange bell pepper to form star and cauliflower to form snow.
4. If desired, cover and refrigerate up to 4 hours. Just before serving, arrange pretzels at bottom of tree to form trunk. Pour the queso into a microwave safe bowl and heat in 30 second increments until warm.