In 2005, Johnson competed in the U.S. 2006 Olympic Trials/National Championships, which she won, thus gaining the right to represent the USA at both the 2006 Winter Olympics and the 2005 World Women's Curling Championship. At the 2005 World Championships, she again won a silver medal, this time losing to Anette Norberg's Swedish rink in the final. For her efforts, Cassie was named USA Curling's Female Athlete of the Year in 2005. Cassie made a difficult, pressure-packed shot in the 11th end of the final match of the 2006 Olympic Trials to qualify for the Turin Games.