Add raw chicken breasts to a gallon size bag and add cornstarch. Shake the bag to coat the chicken.
In small bowl, combine remaining ingredients. Add sauce to gallon size bag and freeze for up to 3 months.
Cook in Instant Pot from Frozen: Dump frozen contents into an instant pot and add 1/4 cup water or broth. Pressure cook on HIGH 30 minutes with a 10 minute natural release. Serve on rolls topped with Swiss cheese.