Microwave the cream cheese in a microwave-safe bowl for 20 seconds or until it is soft enough to stir.
Add the remaining ingredients to the bowl, and stir until combined, breaking up the chicken as you stir.
Transfer the mixture to an ovenproof dish and bake until bubbly, about 25 minutes.
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Recipe Tips
Recipe variations:Substitute blue cheese dressing for the ranch dressing. Also add about 1/3 cup blue cheese crumbles.Substitute Monterey Jack cheese for the cheddar cheese.