Instant Pot Thanksgiving Cheesy Potatoes–a cheesy potato casserole that is a perfect side dish to your holiday meals. The recipe is perfect for Thanksgiving because the entirety of it is made in your Instant Pot…so it doesn’t take up any precious oven space. Plus it stays perfectly warm until you’re ready to feast.

Instant Pot Thanksgiving Cheesy Potatoes
This cheesy hashbrown potato casserole is made from scratch (no cream soups) and is quite perfect for your Thanksgiving (or other special dinner). It is rich and decadent and actually quite easy to make.
The reason this recipe is so great for Thanksgiving is that you can make it from start to finish in your Instant Pot and it will stay warm until you’re ready to eat dinner.
Ideally you will have an air fryer lid for your Instant Pot to make this recipe. If not, there are stove top directions in the recipe card below. I have a Duo Crisp Instant Pot* and used it for this recipe. It comes in handy for crisping up casseroles and melting cheese in your Instant Pot.
These potatoes go great with ham or turkey, rolls and stuffing. If you’re lucky enough to have leftovers you can store them in an airtight container* in the refrigerator for up to 5 days.


Instant Pot Thanksgiving Cheesy Potatoes
- Yield: 8–12 servings 1x
Description
A homemade cheesy potato casserole that is a perfect side dish to your holiday meals. The recipe is perfect for Thanksgiving because the entirety of it is made in your Instant Pot…so it doesn’t take up any precious oven space. Plus it stays perfectly warm until you’re ready to feast.
Ingredients
- 5 Tbsp butter
- 3 Tbsp flour
- 1 1/2 cups milk
- 1 1/2 tsp kosher salt
- 1 tsp poultry seasoning
- 1 tsp black pepper
- 1 tsp onion powder
- 1 tsp garlic powder
- 1 (32 oz) package southern style cubed frozen hashbrowns
- 1 (15 oz) can corn, drained
- 2 cups sour cream
- 1 cup shredded cheddar
- 2 cups cornflakes
- 3 Tbsp melted butter
Instructions
- Turn Instant Pot to saute (normal) setting. When display says HOT add in the 5 Tbsp of butter and whisk it around until it melts. Whisk in the flour, a tablespoon at a time until smooth. Then pour in the milk very slowly, whisking as you go.
- Whisk in the salt, poultry seasoning, pepper, onion powder and garlic powder. When the sauce has thickened turn off the Instant Pot.
- Fold in the hashbrowns, corn, sour cream and cheddar until well coated in the sauce.
- Cover the Instant Pot and secure the lid. Make sure valve is set to sealing. Set the slow cooker setting on “more” to 3 hours. Once 3 hours is up keep the pot on the keep warm setting until 10 minutes before you are ready to eat.
- Crush the cornflakes until they are crumbs. Sprinkle over the top of the potatoes. Then drizzle the 3 Tbsp of melted butter over the top.
- Place the air fryer lid on top of the Instant Pot and air fry for 3 minutes at 300 degrees and then 3 minutes at 400 degrees.
- Serve and enjoy!
Notes
If you don’t have an air fryer lid you’ll need to do the cornflake topping on the stove top. Melt the 3 Tbsp of butter and toss the crushed cornflakes in it until crisped up. Then add on top of the hashbrowns.
- Category: Side
- Method: Instant Pot/Air fryer lid

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Did you know you can filter the recipes on my website to search by meat type, IP or Crockpot, low carb, gluten free, etc.? Use the filter to find exactly what you are looking for.
*Karen Petersen is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.
3 hours????? really???
I just reread the recipe , humm. That instruction was for the slow cooker function, not the IP manual function. Sorry.
I love your IP recipes and use them daily. And to think that I was already to make this recipe in my IP for dinner tonight.
oh haha! yes it’s 3 hours on the slow cooker not pressure cook!
Can I put the thanksgiving cheesy potatoes I. The slow cooker ? Thanks. Sandy
yes you can! Follow same directions except you’ll have to use another method to melt butter and thicken the sauce…maybe on the stove top