Creating Italian Dressing Chicken and Veggie Bake is straightforward. Follow these simple steps for a delicious outcome:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Prepare Chicken: Place the chicken breasts in a large mixing bowl. Pour in the Italian dressing and marinate for at least 10 minutes.
3. Prepare Vegetables: In another bowl, combine the mixed vegetables, sliced red onion, minced garlic, Italian seasoning, salt, and black pepper. Toss until vegetables are evenly coated.
4. Layer Ingredients: In a 9×13 inch baking dish, arrange the marinated chicken breasts. Evenly distribute the prepared vegetable mixture over the chicken.
5. Bake: Cover the baking dish with aluminum foil and place it in the preheated oven. Bake for 25 minutes.
6. Add Cheese: Remove the foil, sprinkle shredded mozzarella cheese over the top if desired, and bake uncovered for an additional 15-20 minutes, or until the chicken is cooked through (internal temperature of 165°F/75°C).
7. Garnish: Remove the dish from the oven and let it sit for a few minutes. Garnish with freshly chopped parsley.
8. Serve: Carefully slice the chicken and serve hot alongside the roasted veggies.

These straightforward steps ensure that you’ll be able to create a mouthwatering meal without any fuss!