Fluffy Baked Mashed Potato Casserole

Introduction

If you love mashed potatoes, this casserole will take them to the next level. Instead of just boiling and mashing, the potatoes are whipped with butter, cream, cheese, and eggs, then baked until golden and puffy. It’s almost like a savory soufflé – airy inside, crispy on top. This dish is a favorite for holidays like Thanksgiving, Christmas, or Sunday family dinners.

Ingredients

• 2 kg (about 4 lbs) potatoes (Yukon Gold or Russet work best)
• 1 cup whole milk or heavy cream (warm)
• ½ cup unsalted butter (softened)
• 1 cup grated cheese (Gruyère, Parmesan, Cheddar, or mix)
• 4 large eggs (separated, whites whipped for extra fluffiness)
• ½ tsp ground nutmeg (optional, adds warmth)
• Salt and black pepper, to taste
• 2 tbsp breadcrumbs (optional, for crispy top)
• 1 tbsp butter (for greasing the dish)

Instructions

Step 1: Prepare the Potatoes

1. Peel and cut potatoes into chunks.
2. Boil in salted water until fork-tender (about 20 minutes).
3. Drain well and mash until smooth (or use a potato ricer for extra fluffiness).

Step 2: Mix the Base

1. Stir in softened butter and warm milk/cream until creamy.
2. Add egg yolks one by one, mixing well after each.
3. Fold in grated cheese, nutmeg, salt, and pepper.

Step 3: Whip the Egg Whites

1. In a separate bowl, beat egg whites until stiff peaks form.
2. Gently fold the whipped whites into the potato mixture (this makes it puff up in the oven).

Step 4: Assemble & Bake

1. Preheat oven to 375°F (190°C).
2. Grease a deep baking dish with butter.
3. Pour in potato mixture and smooth the top.
4. Sprinkle breadcrumbs and a little extra cheese on top (optional).
5. Bake 35–45 minutes until golden, puffed, and slightly crispy on top.

Benefits

• Comfort food upgrade – creamy mashed potatoes made elegant.
• Protein-rich – eggs and cheese make it more filling.
• Family-friendly – everyone loves its soft, fluffy texture.
• Versatile – works as a side dish with roast chicken, beef, or even on its own.

Conclusion

This baked mashed potato casserole is the ultimate crowd-pleaser. With its fluffy inside and golden crust, it’s both cozy and impressive. Serve it hot straight from the oven for holidays, gatherings, or even as a weekday treat.