Why You’ll Love This Cheesy Chicken and Mashed Potato Casserole
Hey there, fellow food lovers! Are you craving a dish that’s both incredibly comforting and surprisingly easy to make? Then look no further than this Creamy Cheesy Chicken and Potato Casserole! This recipe is a true crowd-pleaser, perfect for a cozy weeknight dinner or a special family gathering. Imagine the rich, creamy texture of perfectly mashed potatoes, intertwined with tender shredded chicken and a generous blanket of melted mozzarella and cheddar cheese. Just thinking about it makes my mouth water!
What makes this casserole so special? It’s the perfect balance of flavors and textures. The creamy mashed potatoes provide a comforting base, while the shredded chicken adds a savory protein punch. The blend of mozzarella and cheddar cheeses creates a gooey, cheesy goodness that’s simply irresistible. And the hint of garlic powder adds a subtle depth of flavor that elevates the whole dish. It’s seriously addictive!
This recipe is also incredibly quick and easy to prepare, even on a busy weeknight. You can even use leftover cooked chicken to save time! It’s the kind of dish that will leave you feeling warm and satisfied from the inside out. The cheesy, creamy goodness evokes feelings of pure comfort and happiness – a true hug in a bowl! Trust me, your taste buds (and your family) will thank you.

What You’ll Need
Here’s what you’ll need to whip up this delicious casserole. Don’t worry, it’s all pretty standard fare!
- 3 cups cooked chicken, shredded: Rotisserie chicken is a fantastic shortcut here! Otherwise, cook your favorite chicken breast and shred it.
- 4 cups mashed potatoes: Feel free to make your own from scratch or use instant mashed potatoes for extra convenience. Just make sure they’re creamy and well-seasoned.
- 1 cup shredded mozzarella cheese: The classic melting cheese, providing a stretchy, gooey texture.
- ½ cup shredded cheddar cheese: Adds a sharp, tangy counterpoint to the creamy mozzarella.
- 1 cup sour cream: This is key for adding extra creaminess and richness to the casserole.
- 1 tbsp garlic powder: A subtle but essential flavor enhancer.
- Salt and pepper to taste: Seasoning is everything! Adjust to your preferences.
- 2 tbsp fresh chives, chopped (for garnish): These add a vibrant pop of freshness and color.
Step-by-Step Instructions
Let’s get cooking! This recipe is easier than you think. Follow these steps for cheesy, comforting perfection.
- Preheat your oven to 375°F (190°C). This ensures your casserole bakes evenly and gets beautifully golden brown.
- Prepare your mashed potatoes: If using instant, follow package directions. If making from scratch, ensure they’re creamy and seasoned well with salt and pepper. A little butter never hurts either!
- In a large bowl, combine the mashed potatoes, shredded chicken, sour cream, and garlic powder. Mix thoroughly until everything is evenly distributed. Tip: Don’t overmix, as this can make the potatoes gummy.
- Stir in half of the mozzarella and cheddar cheese. Reserve the remaining cheese for topping. This way, you get that beautiful melted cheese layer on top.
- Pour the mixture into a greased 9×13 inch baking dish. Make sure the mixture is evenly spread for consistent cooking.
- Sprinkle the remaining mozzarella and cheddar cheese over the top. Get generous here! It’s all about that cheesy goodness.
- Bake for 25-30 minutes, or until golden brown and bubbly. Keep a close eye on it during the last few minutes to prevent burning. Tip: If the top browns too quickly, loosely tent it with foil.
- Garnish with chopped fresh chives before serving. This adds a fresh, vibrant touch to the dish. Tip: Allow the casserole to rest for a few minutes before serving to let it set slightly.
Tips for Success
Here are a few tips to help you achieve cheesy casserole perfection:
Don’t overmix the potato mixture: Overmixing can lead to gummy potatoes. Gently fold the ingredients together until just combined. Use freshly grated cheese: Pre-shredded cheese often contains cellulose which can prevent it from melting smoothly. Grease your baking dish well: This will prevent sticking and make for easy cleanup. Check for doneness: Every oven is different, so check the casserole for doneness around the 25-minute mark. If it’s not quite ready, continue baking in 5-minute intervals.
Variations to Try
Feeling creative? Here are some fun variations to spice things up:
Spicy Chicken Casserole: Add a pinch of red pepper flakes or a dash of your favorite hot sauce to the mixture. Bacon Cheddar Variation: Crumble cooked bacon and add it to the mixture along with extra cheddar cheese. Vegetarian Option: Substitute the chicken with cooked lentils, black beans, or roasted vegetables like mushrooms and bell peppers.
Storing and Reheating
Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. To reheat, you can either microwave individual portions until heated through or bake it in a preheated oven at 350°F (175°C) for 15-20 minutes, or until heated through and bubbly. Freezing this casserole is also possible. Allow it to cool completely before wrapping it tightly in plastic wrap and then foil. Freeze for up to 3 months. To reheat from frozen, thaw overnight in the refrigerator and then bake as directed above, adding a few more minutes to the baking time.

Frequently Asked Questions
Q: Can I use different cheeses? A: Absolutely! Experiment with your favorite cheeses. Monterey Jack, Gruyere, or even a blend of different cheeses would work well.
Q: Can I make this ahead of time? A: Yes! You can assemble the casserole up to a day in advance and store it covered in the refrigerator. Just add about 10-15 minutes to the baking time.
Q: How long does this casserole last in the refrigerator? A: Stored properly in an airtight container, it will last for up to 3 days in the refrigerator.
Q: Can I use frozen chicken? A: Yes, you can use frozen chicken. Ensure you thaw it completely before shredding and adding it to the casserole.
Q: Is this recipe gluten-free? A: Yes, this recipe is naturally gluten-free, provided you use gluten-free mashed potatoes (if not making your own from scratch).
The Final Word
This Creamy Cheesy Chicken and Potato Casserole is the ultimate comfort food. It’s easy to make, incredibly delicious, and perfect for any occasion. The creamy potatoes, tender chicken, and melted cheese combination is a match made in heaven! I highly recommend giving this recipe a try. Let me know in the comments how it turns out, and don’t forget to rate the recipe! Happy cooking!

Cheesy Chicken and Mashed Potato Casserole
Equipment
- 9×13 inch baking dish Or a similar sized oven-safe dish
Ingredients
Chicken & Potato Base
- 3 cups cooked chicken, shredded
- 4 cups mashed potatoes
Cheese & Sauce
- 1 cup shredded mozzarella cheese
- 0.5 cup cheddar cheese shredded
- 1 cup sour cream
- 1 tbsp garlic powder
- 2 tbsp fresh chives, chopped (for garnish)
- salt to taste
- pepper to taste
Instructions
- Preheat oven to 375°F (190°C).
- In a large bowl, combine the shredded chicken (ing_1) and mashed potatoes (ing_2).
- In a separate bowl, mix together the mozzarella cheese (ing_3), cheddar cheese (ing_4), sour cream (ing_5), garlic powder (ing_6), salt (ing_8), and pepper (ing_9).
- Pour the cheese mixture over the chicken and potato mixture, stirring gently to combine.
- Transfer the mixture to a greased 9×13 inch baking dish.
- Bake for 25-30 minutes, or until heated through and bubbly.
- Garnish with chopped fresh chives (ing_7) before serving.