Begin by dicing your boneless, skinless chicken breasts into bite-sized pieces. This allows for even cooking and makes for easy eating.
In a mixing bowl, add the diced chicken and 2 tablespoons of cornstarch. Toss to coat the chicken evenly. This step is crucial for achieving that crispy texture that makes this dish so delightful.
Heat 2 tablespoons of olive oil in a large skillet or wok over medium-high heat. Once the oil is hot, add the coated chicken pieces. Cook until golden brown and cooked through, about 5-7 minutes. Make sure to stir occasionally to ensure even cooking. Remove the chicken from the skillet and set aside.
In the same skillet, add the minced garlic and ginger, sautéing for about 30 seconds until fragrant. Pour in the low-sodium soy sauce, honey, chicken broth, and toasted sesame oil. Stir well to combine, scraping up any bits stuck to the bottom of the skillet.
In a small bowl, mix the remaining 2 tablespoons of cornstarch with 1 tablespoon of water to create a slurry. Slowly add this to the sauce in the skillet while stirring constantly. This will thicken the sauce beautifully.
Return the cooked chicken to the skillet, tossing it in the sauce until everything is well coated. Let it simmer for another 2-3 minutes for the flavors to meld together. Season with salt and black pepper to taste.
Serve your Better-Than-Takeout Mongolian Chicken over steamed rice or noodles. Garnish with chopped green onions and sesame seeds for that added crunch and flavor.