1
In a medium pot, bring 5 cups water (8 cups for 4 servings) to a boil, then reduce to a low simmer. (You’ll use the water in Step 3.) Wash and dry produce.
Halve, peel, and dice onion. Trim and thinly slice mushrooms (skip if your mushrooms are pre-sliced!). Peel and mince or grate garlic. Pick parsley leaves from stems; roughly chop leaves.
Pat chicken* dry with paper towels. Place on a plate and season all over with 2 tsp Italian Seasoning (4 tsp for 4), salt, and pepper. (You’ll use the rest of the Italian Seasoning in the next step.)