Remove leaves and core from cauliflower.
In covered saucepan cook whole cauliflower in small amount of boiling salted water 20 to 25 minutes or till just tender when tested with a fork.
Drain well and chill.
Place chilled cauliflower on platter.
Spread Guacamole over entire surface.
Sprinkle with cheese.
Garnish platter with radish roses.