Heat butter and cook cashews until lightly toasted.
Remove nuts from pan.
In remaining butter, stir in chicken and broc coli; cook about 5 minutes, turning mixture often.
Add onions and bouillon.
Cover and cook for 6 to 8 minutes.
Dissolve cornstarch in soy sauce; stir into chicken mixture.
Stir over medium heat until thickened.
Fill crepes and serve immediately.