French Onion Chicken

By Pamelia

4.18 / 5

10min

1h

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1 serving cooking spray
4 frozen whole chicken breasts
1 (8 ounce) package sliced fresh mushrooms
1 (10.75 ounce) can condensed cream of mushroom soup
8 ounces sour cream
1 (1 ounce) package dry onion soup mix