What is the secret to this hearty casserole that smothers tender rotisserie chicken under a bed of mashed potatoes and melted cheese? A crunchy yet fluffy crust on the bottom made of buttermilk biscuits.

Cheesy Chicken and Mashed Potato Casserole Recipe

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Preparation: 30 mins
Cooking: 50 mins
Total: 1 hr20 mins
Serves: 8 people


  • 1 box Idahoan Mashed Potatoes Instant, Mashed
  • 1 tsp. Garlic Powder
  • 1 tsp. Onion Powder
  • 1 tsp. Ground Black Pepper
  • 7.5 oz. Buttermilk Biscuits Refrigerated
  • 8 cups Rotisserie Chicken shredded, Cooked
  • 1 cup Cheddar Cheese Shredded


  1. Preheat oven to 350°.

  2. Follow the box's instructions for making mashed potatoes.

  3. Stir in the garlic powder, onion powder, and ground black pepper into the finished mashed potato.

  4. Place the unbaked biscuits in a single layer on the bottom of a 9x13" baking dish.

  5. Evenly sprinkle the shredded chicken across the biscuit layer.
  6. Spread the mashed potatoes over the chicken and biscuits, then top with the shredded cheddar.
  7. Bake for 35-45 minutes or until cheese has melted. Let the dish cool for 5 minutes and serve up.

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