Bring a pot of lightly salted water to a boil. Add the green beans and blanch for 2 minutes until aldente. Remove, drain, and plunge in an ice bath to shock and stop them from cooking.
Add all of the Korean cucumber salad ingredients in a bowl and mix well to combine. Store in the fridge until ready to serve.
Add the washed jasmine rice, cold water and salt to a saucepan and boil. Reduce the heat to low, place on a lid and cook for 12 minutes. Turn off the heat and leave the lid on for 4 minutes. Remove the lid and fluff the rice with a fork or spatula. Set aside.
Place a large pan over medium-high heat. Add olive oil and onion and saute for 4 minutes, mixing regularly. Add garlic and cook for 1 minute. Add the beef mince and let it sit for 2 minutes to build a crust. Mix and break the meat, cooking for 6 minutes or until it is no longer pink and the beef is brown.
Add the blanched green beans, spring onion (scallion), sweet chilli sauce, oyster or hoisin sauce, and soy sauce and mix well to combine. Cook for 1 ½ to 2 minutes or until the sauce has thickened. Check the seasoning and remove it from the heat.
Place the cooked jasmine rice into 5x 750ml meal prep containers. Add the sticky beef and the Korean cucumber salad. Top with a sauce of choice. Dig in.