Stir together pork and 2 tablespoons stir-fry sauce.
Stir-fry pork in 1 tablespoon hot oil in a large skillet over high heat 3 to 5 minutes or until lightly browned. Remove pork, and set aside.
Add remaining 1 tablespoon oil to skillet. Stir-fry bell pepper and onion 2 to 3 minutes or until crisp-tender.
Return pork to skillet. Stir in remaining 2 tablespoons stir-fry sauce, green beans, and cashews. Cook until thoroughly heated. Serve over rice.
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