Creamy Chicken Potato Dish

Featured in Dinner Winners Every Time.

Use extra chicken and potatoes in a creamy mushroom bake. Top it with cheese or breadcrumbs for a satisfying finish.
A woman holding a vegetable in a kitchen.
Updated on Tue, 15 Apr 2025 20:53:52 GMT
Rich casserole with breadcrumbs and fresh parsley on top. Pin it
Rich casserole with breadcrumbs and fresh parsley on top. | cookwithtaste.com

Can't wait to tell you about my top trick for jazzing up those day-after meals! This No-Fuss Chicken and Potato Bake has become my ultimate comfort dish. When leftover chicken meets savory mushroom gravy and chunky potatoes, you get something truly magical in every mouthful.

Easy But Impressive

The best thing about this bake is how it takes yesterday's dinner and turns it into something the whole family gets pumped about. That smooth white gravy pulls everything together so nicely, and you can chuck in whatever extra veggies or toppings you've got hanging around.

Round Up Your Supplies

  • Butter: Plain unsalted for cooking and maybe topping if you want breadcrumbs.
  • Mushrooms: Fresh ones cut into slices for that woodsy taste.
  • Onions: Diced up for flavor foundation.
  • All-Purpose Flour: This makes your mushroom sauce nice and thick.
  • Milk (or Half-and-Half): For that smooth, lush sauce.
  • Cooked Potatoes: Chunked up leftover baked or boiled spuds.
  • Cooked Chicken: Bits of yesterday's bird, whether from the store rotisserie or home roasted.
  • Breadcrumbs (Optional): Regular breadcrumbs mixed with melted butter for a crunchy top.
  • Shredded Cheese (Optional): Some cheddar or Jack to make things extra yummy.

Building Coziness

Step 6 - Serve It Up
Take out of the oven when hot and bubbling around the edges. Dish it out right away.
Step 5 - Top It Off
For breadcrumb fans, mix 1 cup breadcrumbs with 2 tablespoons melted butter. Or just throw 1 cup shredded cheddar on top instead.
Step 4 - Put It Together
Mix 2 cups diced cooked chicken, 2 cups chunked cooked potatoes, and your mushroom mixture in your greased dish. Stir it up gently.
Step 3 - Whip Up The Gravy
Throw in 2 tablespoons flour and cook about 2 minutes. Slowly pour in 1 cup milk or half-and-half while stirring till it gets thick, around 3-5 minutes. Add salt and pepper how you like it.
Step 2 - Cook Your Veggies
Melt 3 tablespoons butter in a pan over medium. Toss in sliced mushrooms and chopped onions, and cook them about 8 minutes till they're soft and getting brown.
Step 1 - Get The Oven Ready
Turn your oven to 350°F (180°C) and grease a 2-quart baking dish lightly.

Pro Tips

After making this tons of times, I've learned some tricks. Pour your milk in bit by bit to keep the sauce smooth, and always check the flavor before it goes in the oven since everything's already cooked. No baking dish? A cast iron pan works great too. Just don't put cold glass straight in a hot oven or it might crack!

Custom Tweaks

This dish is so fun to play around with! Sometimes I throw in a handful of frozen peas or some leftover broccoli. Fresh herbs like thyme make everything taste better. And don't get me started on toppings - those crunchy canned onions on top are amazing!

Storage Smarts

You can put this together a day early and park it in the fridge until dinner time. It even freezes great for up to a month. Just remember it'll need a bit more time in the oven if you're cooking it cold from the refrigerator.

A creamy casserole topped with golden breadcrumbs, featuring mushrooms and potato slices, is baked in a white dish on a dark surface next to a blue napkin and spoon. Pin it
A creamy casserole topped with golden breadcrumbs, featuring mushrooms and potato slices, is baked in a white dish on a dark surface next to a blue napkin and spoon. | cookwithtaste.com

Tasty Teammates

We always have this with a simple green salad to cut through the richness. Some quick cooked spinach or whatever veggies are in season work great too. It's all about balancing out that hearty comfort food feeling!

Frequently Asked Questions

→ Which potatoes work best for this meal?
Any pre-cooked potatoes work, whether boiled, roasted, or mashed. If using mashed potatoes, layer them instead of mixing. Waxy types like red or yellow hold up better than russets.
→ Can I make this ahead of time?
Sure, you can assemble it a day in advance. Keep it in the fridge and bake right before serving, adding 10-15 minutes to account for the chill. Add the topping just before baking.
→ What can I swap for mushrooms?
If mushrooms aren't your thing, toss in carrots, peas, or celery instead. Stick to about 1 cup of veggies to keep your sauce consistency right. Frozen veggie mixes work, too.
→ Can I freeze this meal?
Yes, but be aware the creamy sauce might change a bit after freezing. Skip the topping before freezing and bake it fresh later. Freeze up to 2 months. Thaw overnight before adding the topping and baking.
→ What could replace half-and-half?
Whole milk is a lighter option, while heavy cream gives extra richness. For dairy-free, go with unsweetened almond or oat milk, though it won't be as creamy. Adjust the flour a bit to get the right thickness.

Conclusion

This filling potato and chicken bake is a great way to use leftovers.

A creamy sauce, tender chicken, and mushrooms come together for a cozy dish. Your family will love this one!

Leftover Chicken Casserole

A rich mix of chicken, potatoes, mushrooms, and onions baked under a cheesy or crispy breadcrumb layer.

Prep Time
15 Minutes
Cook Time
30 Minutes
Total Time
45 Minutes
By: Milly

Category: Main Dishes

Difficulty: Intermediate

Cuisine: American

Yield: 6 Servings (6 servings)

Dietary: ~

Ingredients

01 1 cup diced cooked chicken.
02 A pinch of salt to taste.
03 3 tablespoons of butter, unsalted.
04 2 cups cooked and diced potatoes.
05 8 oz mushrooms, cut into slices.
06 A dash of freshly ground black pepper.
07 1 cup finely chopped onion.
08 1 cup cheddar or Monterey Jack cheese, shredded (optional).
09 Two tablespoons melted butter (optional).
10 1 cup milk or half-and-half.
11 Optional: 1 cup soft breadcrumbs.
12 2 tablespoons plain flour.

Instructions

Step 01

Heat the oven at 350 F/180 C/Gas Mark 4 and grease a 2-quart baking dish slightly.

Step 02

Melt butter in a big skillet over a medium fire. Toss in mushrooms along with onions, cooking for about eight minutes till soft and golden.

Step 03

Mix flour into the skillet and stir it for a minute or two. Slowly pour in the milk, mixing until the sauce thickens, which takes around 3-5 minutes. Sprinkle salt and pepper to season.

Step 04

In the greased baking dish, throw together the cooked potatoes, chicken bits, and your creamy mushroom mixture.

Step 05

Spread out some cheese or breadcrumbs on top. Want breadcrumbs? Toss them with melted butter first.

Step 06

Pop it into the oven and bake for 25-30 minutes till bubbly and heated through.

Notes

  1. Cheese or breadcrumbs? Both toppings are tasty, so it’s up to you!
  2. An ideal dish for using up leftover spuds and chicken.

Tools You'll Need

  • A baking dish, 2-quart size.
  • One large skillet.

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Milk-based ingredients.
  • Contains gluten.

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 403
  • Total Fat: 19 g
  • Total Carbohydrate: 33 g
  • Protein: 26 g