Creating Forgotten Chicken is straightforward if you follow these steps:

1. Prepare the Slow Cooker: Begin by lightly greasing your slow cooker with a non-stick spray.
2. Arrange Chicken: Place the chicken breasts evenly at the bottom of the slow cooker.
3. Add Mushroom Soup: Spread the cream of mushroom soup over the chicken to coat.
4. Pour in Broth: Add the chicken broth for moisture and flavor.
5. Sprinkle Onion Mix: Evenly sprinkle the onion soup mix on top of the mixture.
6. Add Mushrooms: Layer the sliced mushrooms over the top for extra flavor.
7. Season: Add salt and pepper according to your taste preference.
8. Cook: Cover and set the slow cooker to low for 4–4.5 hours.
9. Add Peas: About 30 minutes before serving, stir in the frozen peas for added color and nutrition.
10. Rest and Serve: Once cooked, allow the dish to rest for 15 minutes before serving. Garnish with fresh herbs if desired.

This method ensures that the chicken becomes incredibly tender and flavorful while cooking in the slow cooker, soaking up all the delicious juices.