Chicken Bacon Ranch Gratin Potatoes with Cheddar Cheese

A hearty comfort food casserole that combines tender cubed Yukon potatoes with seasoned chicken and crispy bacon in a rich ranch-flavored cream sauce. The dish is layered in a baking dish and topped with melted cheddar cheese for a golden, bubbly finish. Perfect for family dinners or potluck gatherings, this one-dish meal offers the classic flavors of chicken, bacon, and ranch in every bite. The creamy sauce infuses the potatoes while baking, creating a satisfying side dish or main course that pairs well with a simple green salad.
Ingredients
- 6 yukon potatoes, scrubbed clean and cubed
- 2 cups chicken breast, cooked and chopped
- ½ cup bacon, cooked and crumbled (divided)
- ¼ cup unsalted butter
- 1 yellow onion, thinly sliced
- 1 clove garlic, minced
- 3 tablespoons flour
- 1 packet ranch seasoning, or 3 tablespoons homemadeItalian seasoning1:1flavor_change
completely different taste profile
- 2 cups heavy cream
- 2 cups shredded Cheddar cheese, divided
Instructions
- 1
Preheat the oven to 400 degrees
- 2
Cut the potatoes into 1 inch chunks
- 3
Layer the potatoes, chicken and 1/4 cup bacon together in a greased 9x13 baking pan
- 4
Add the butter, onion and garlic to a large heavy skillet on medium heat and cook for 5-6 minutes until translucent, stirring occasionally
- 5
Add in the flour and ranch seasoning and whisk well until flour is completely absorbed
- 6
Slowly pour in the heavy cream as you whisk the mixture and cook for 8-10 minutes until thickened
- 7
Whisk in half the cheddar cheese until the cheese is melted
- 8
Pour the mixture evenly in the baking dish
- 9
Cover tightly with foil and bake for 30 minutes
- 10
Uncover and cook for 20 minutes then top with remaining cheddar cheese and remaining 1/4 cup bacon
- 11
Bake for 10 minutes then serve hot
Tips
Pre-cook chicken and bacon ahead of time to streamline assembly and ensure even cooking throughout the gratin.
Use Yukon potatoes for their creamy texture and natural buttery flavor that complements the ranch seasoning perfectly.
Let the gratin rest for 5 minutes after baking to allow the sauce to set before serving.
Good to Know
Refrigerate leftovers for up to 3 days in an airtight container
Can assemble up to 1 day ahead and refrigerate before final baking
Serve hot directly from the oven with a simple green salad
Common Mistakes
Don't skip covering with foil initially to prevent potatoes from browning before cooking through
Avoid adding cheese too early to prevent burning and separation
Substitutions
Dairy-Free Swaps
General Alternatives
FAQ
Can I use frozen potatoes instead of fresh?
Yes, but thaw and pat dry first. Cooking time may need slight adjustment as frozen potatoes release more moisture.
What if I don't have ranch seasoning packets?
Make homemade with dried dill, garlic powder, onion powder, dried parsley, salt and pepper in equal parts.
How long will leftovers keep in the refrigerator?
Store covered for up to 3 days. Reheat in 350F oven until warmed through, about 15-20 minutes.