Creamy Ham and Cheddar Mashed Potato Casserole Tips, FAQ & printable recipe

Tips for success

For a more intense flavor, consider using a mix of sharp cheddar and a milder cheese like mozzarella to balance the sharpness while maintaining excellent meltability.

If you prefer a bit of heat, a pinch of cayenne pepper or a few dashes of hot sauce can be whisked into the sour cream mixture. These small additions can significantly change the character of the dish without requiring any extra cooking time or complicated preparation steps.

If you find the casserole is browning too quickly on top before the center is heated through, loosely cover the baker with aluminum foil for the first 15 minutes of baking.

Remove the foil for the final 10 minutes to allow the cheese to crisp up and achieve that beautiful golden finish. This technique ensures the interior stays perfectly creamy while the topping reaches the desired texture and color without the risk of burning.

Variations

• Bacon and Scallion: Replace the ham with crispy cooked bacon bits and use chopped scallions instead of chives for a stronger, more robust onion flavor profile that complements the smoky bacon perfectly.
• Garlic and Herb: Whisk one teaspoon of garlic powder and a tablespoon of fresh minced parsley into the sour cream mixture to add an aromatic, herbaceous depth to the finished casserole.

Storage and make-ahead

Fridge

Store in an airtight container for up to 3 days.

Freezer

Freeze for up to 1 month; thaw overnight in the fridge before reheating.

Reheat

Reheat in the oven at 350°F (175°C) until warmed through, or use the microwave for individual portions.

Store any leftovers in an airtight container or cover the original baker tightly with plastic wrap or foil. Keeping the casserole well-sealed is important to prevent it from absorbing other odors in the refrigerator and to maintain the moisture of the potato base.

It can be kept in the refrigerator for up to 3 days, provided it is cooled to room temperature within 2 hours of being removed from the oven to ensure maximum freshness and safety.

This dish is perfect for making ahead. You can assemble the entire casserole, cover it, and keep it in the refrigerator for up to 24 hours before baking. When ready to serve, remove the dish from the refrigerator and let it sit on the counter for about 20 minutes to take the chill off before placing it in the preheated oven. You may need to add 5 to 10 minutes to the total baking time to ensure the center is completely heated.

Serving ideas

Serve this casserole hot, straight from the oven, as a decadent side dish for roasted meats, grilled poultry, or a simple green salad. Its richness pairs beautifully with the acidity of fresh vegetables or a sharp vinaigrette.

Because it is quite filling, smaller portions are often sufficient, making it an excellent choice for larger gatherings where you want to provide a comforting, reliable option that appeals to almost everyone at the table.

When serving, use a large spoon to scoop through the layers, ensuring each portion includes plenty of the cheesy crust and the creamy potato-ham mixture. For an extra touch, garnish the finished plates with a sprinkle of fresh, finely chopped chives or a dollop of cold sour cream. This adds a fresh, cooling contrast to the hot, savory casserole, enhancing the overall presentation and flavor profile of the meal for your guests.

Frequently asked questions

Recipe card

Creamy Ham and Cheddar Mashed Potato Casserole

Prep 10 minCook 25 minRest 5 minTotal 40 minServes 6

Ingredients

• 6 cups mashed potatoes, prepared
• 1 cup cooked ham, diced
• 1 cup sour cream
• 2 tbsp unsalted butter, melted
• 2 tbsp fresh chives, finely chopped
• 2 cups sharp cheddar cheese, shredded

Instructions

1. Preheat the oven to 375°F (190°C). In a large rectangular baker, spread the prepared mashed potatoes into an even layer. Scatter the diced cooked ham evenly over the top of the potatoes, ensuring a good distribution throughout the dish.
2. In a medium mixing bowl, whisk together the sour cream, melted butter, and chopped chives until smooth and well combined. Pour this mixture evenly over the potato and ham layer, using a spatula to gently spread it if necessary to ensure it covers the potatoes completely.
3. Shower the shredded cheddar cheese thickly over the top of the casserole. Place the baker in the preheated oven and bake for 20 to 25 minutes, or until the cheese is melted and bubbling at the edges. Remove from the oven and let sit for 5 minutes before serving.

Contains: milk

Estimated nutrition per serving

Calories

380

Protein

12.5 g

Carbohydrates

32 g

Fat

22 g

Fiber

2.5 g

Sugar

3 g

Sodium

650 mg

Automatic estimate from the ingredient list, not laboratory-verified.