Whisk together oil, honey, soy sauce, rice wine vinegar, brown sugar, garlic, ginger, and red pepper flake and pour oven chicken breasts in slow cooker.
Add onion, red pepper, and cashews. Cook on low for 3-4 hours.
Serve over rice and top with green onion.
Recipe by Rachel Schultz at https://rachelschultz.com/2013/03/13/slow-cooker-cashew-chicken/