Cheesy Mashed Potatoes Recipe (Holiday-Ready & Extra Gooey)

Every Thanksgiving and Christmas my mother-in-law brings Giada’s Baked Mashed Potatoes with Parmesan Cheese and Bread Crumbs. They’re a family favorite—but I couldn’t help wondering: what if we added even more cheese?

The result is this over-the-top cheesy mashed potatoes recipe with a golden, bubbly crust that practically begs for a fork. It’s the perfect holiday side when you need something indulgent but still easy enough to pull off with three kids underfoot.

Ingredients

• 4 lbs yellow or white potatoes, peeled & cubed
• 1 teaspoon salt (for boiling water)
• 1 stick unsalted butter
• 1 cup milk or heavy cream
• 2½ cups shredded mozzarella cheese, divided (freshly grated preferred)
• 1¼ cups freshly grated Parmesan cheese, divided
• 1 cup shredded Colby Jack cheese
• Salt & pepper, to taste

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Step-by-Step Instructions

1. Cook the Potatoes
   • Place potatoes in your Instant Pot with enough water to cover and 1 teaspoon salt.
   • Cook on High Pressure for 3 minutes, then quick-release and drain.
2. Mash Right in the Pot
   • Add butter, milk or cream, 1½ cups mozzarella, and ¾ cup Parmesan.
   • Mash until smooth and creamy. Season with salt and pepper.
3. Assemble the Casserole
   • Spread the potatoes into a buttered 9×13-inch baking dish.
   • Top with remaining 1 cup mozzarella, ½ cup Parmesan, and 1 cup Colby Jack.
4. Bake & Broil
   • Bake at 400°F for 20 minutes until hot and lightly golden.
   • Switch to broil for 2–3 minutes for that irresistible brown, bubbly cheese crust.
5. Serve & Savor
   • Let rest 5 minutes, then slice and serve the cheesiest mashed potatoes you’ll ever taste.

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Make-Ahead Tips

• Prep Ahead: Assemble the dish up to a day in advance.
• Bake Later: Cover and refrigerate. Bring to room temp for 30 minutes, then bake as directed.

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Why These Mashed Potatoes Stand Out

• Flavor: Triple cheese blend = maximum gooeyness.
• Texture: Instant Pot cooking creates fluffy, lump-free potatoes.
• Crowd Appeal: Guaranteed requests for seconds and the recipe card.

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Cheesy Mashed Potatoes FAQs
Can I make these ahead of time?
Yes! Prepare the potatoes, spread them in the baking dish, cover tightly, and refrigerate for up to 24 hours. Let sit at room temp 30 minutes before baking.

Can I freeze leftover mashed potatoes?
Absolutely. Cool completely, wrap well, and freeze for up to 2 months. Reheat in the oven at 350 °F until warmed through.

Can I use a different cheese?
Mozzarella, Parmesan, and Colby Jack create the best melt and flavor, but cheddar, Gruyère, or Fontina all work.

What’s the best potato variety?
Yukon Golds or white potatoes give the creamiest texture without becoming watery.

Stovetop Method (No Instant Pot)

If you prefer the classic method or don’t have a pressure cooker, follow these simple steps:

1. Boil the potatoes: Place peeled and cubed potatoes in a large pot. Cover with cold water by 1 inch and add 1 teaspoon salt.
2. Cook: Bring to a boil, then reduce to a gentle simmer. Cook for 15–20 minutes, or until the potatoes are fork-tender.
3. Drain & mash: Drain well, return potatoes to the pot, and mash with 1 stick of butter, 1 cup milk or cream, 1½ cups shredded mozzarella, and ¾ cup fresh grated Parmesan. Season with salt and pepper.
4. Bake: Transfer to a 9×13 pan, top with 1 cup mozzarella, ½ cup Parmesan, and 1 cup Colby Jack. Bake at 400 °F for 20 minutes, then broil 2–3 minutes until bubbly and golden.

This keeps all the cheesy magic of the Instant Pot version—just a few extra minutes on the stove.

Serving Ideas

Pair with roast chicken, prime rib, or a classic turkey dinner. Add a fresh salad or maple roasted carrots for color and balance.

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