Heat half of the oil in a large skillet over medium-high heat; add chicken strips and quickly sauté until browned and cooked through; remove from skillet and keep warm.
Process 1/4 cup of the cashews in a blender or food processor until finely ground; set aside.
Heat remaining oil to the skillet; add garlic and ginger and stir-fry for just 15 seconds.
Stir in ground cashews then slowly add chicken broth, stirring until well blended. Let sauce simmer for a few minutes to reduce slightly then return chicken to the skillet and heat through.
Chop remaining cashews and serve on top of chicken and sauce.