Creating Black Pepper Chicken with Mushrooms is straightforward, and following these steps will lead to a perfectly cooked dish:

1. Prep the Chicken: In a bowl, toss the sliced chicken with cornstarch, soy sauce, and half of the black pepper. Let it marinate for about 10-15 minutes.
2. Heat the Oil: In a large skillet or wok, heat the vegetable oil over medium-high heat.
3. Cook Chicken: Add the marinated chicken to the skillet and cook for about 5-7 minutes until it is browned and no longer pink in the center. Remove the chicken from the pan and set it aside.
4. Sauté Vegetables: In the same skillet, add onions, garlic, and mushrooms. Stir-fry for 4-5 minutes until they soften.
5. Return Chicken: Add the cooked chicken back into the skillet along with the remaining black pepper, oyster sauce, and chicken broth. Stir to combine.
6. Simmer: Allow the mixture to simmer for about 5-10 minutes, letting the flavors meld together.
7. Finish with Sesame Oil: Drizzle the sesame oil into the skillet and stir gently.
8. Garnish: Remove from heat and garnish with chopped green onions before serving.

These simple steps ensure a delicious meal that’s ready in no time at all.