In covered saucepan, cook whole cauliflower in small amount of boiling water 20 to 25 minutes or until just tender when tested with fork. Drain well and chill.
Place chilled cauliflower on platter.
Spread guacamole over entire surface. Sprinkle with cheese and bacon.
Garnish platter with radish roses.
Makes 6 to 8 servings.