Super Simple Chicken

Last night, grilled chicken was on the menu, but when I stepped outside to grill, I found that my grill was out of order.
I was in a hurry, and so I threw this recipe together - just winging it with ingredients I had on hand.

I was surprised when my oldest daughter, followed by my second exclaimed how good this was! They both immediately asked me to post it here for posterity's sake (theirs). My husband got home a little later and he too really loved it. He and one of my kids took leftovers of this meal for their lunches today.

My jaw is still on the ground because it was so simple. I served it with roasted potatoes, and chimichurri sauce. 
Here's the recipe - for posterity's sake.

6-8 skinless, frozen chicken breasts
1 c. water
1/2 yellow onion - sliced
4 mushrooms, sliced
1/2 c. chopped red bell pepper
3 garlic cloves, chopped

Place chicken in cast iron pan over medium high heat.
Spread onions, mushrooms, peppers, and garlic over the top of the chicken.  Add 1/2-1 c. water, and cover with a lid (I use my pizza stone as a lid).
Cook for approximately 20 minutes, until chicken is no longer pink in the middle.
Check halfway through to make sure water hasn't boiled away. If it has, add more water.

Serve with roasted potatoes and chimichurri sauce - serve everything with chimichurri sauce :)