Coat the Chicken: In a small bowl, whisk together cornstarch, salt, and pepper. Add your diced chicken pieces and toss until evenly coated on all sides, about 1 minute.
Sear the Chicken: Heat sesame oil and olive oil in a large skillet over medium-high heat until shimmering, about 1 minute. Add the coated chicken pieces and sear for 4 to 5 minutes until the edges are golden and sealed, stirring occasionally. Transfer the chicken to a plate.
Build the Flavor Base: In the same skillet, add minced garlic and cook for about 30 seconds until fragrant, stirring constantly to prevent burning.
Sauté the Vegetables: Add broccoli florets and red bell peppers to the skillet and cook for 3 to 4 minutes over medium-high heat, stirring frequently, until they begin to soften and develop color. Add the frozen edamame and cook for another 1 to 2 minutes.
Make the Sauce: In a small bowl, whisk together soy sauce, honey, rice wine vinegar, Asian chili garlic sauce, and ground ginger until well combined. Pour the sauce into the skillet with the vegetables.
Bring It Together: Return the chicken to the skillet and add the cashews, stirring gently to coat everything in the sauce. Cook for 2 to 3 minutes over medium heat until the sauce thickens slightly and the chicken is heated through to 160 degrees Fahrenheit internally.
Plate Your Dish: Transfer the cashew chicken to serving bowls or plates, making sure to distribute the vegetables and cashews evenly.
Garnish with Green Onions: Top each serving with fresh sliced green onions for a bright, aromatic finish that adds color and a fresh bite.
Serve Immediately: This dish is best enjoyed right away while the cashews are still crispy and the sauce is glossy and clinging to every component.