Cashew Chicken Stir-Fry with Red Peppers

cornstarch, divided

tblsp. soy sauce, divided

rice wine vinegar

sugar

hot pepper sauce

boneless, skinless chicken breast, cut lengthwise into strips

cashews, coarsely chopped

tblsp. peanut oil

large red bell pepper, cut into strips

minced garlic

minced fresh ginger

green onions, thinly sliced