Name: cheesy potato casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Cuisine: American
Ingredients: 4 large russet potatoes, thinly sliced; 1 cup shredded cheddar cheese; 1 cup shredded mozzarella cheese; 1/2 cup grated Parmesan cheese; 1 cup heavy cream; 1/2 cup whole milk; 2 tbsp butter, melted; 2 cloves garlic, minced; 1 tsp dried thyme; 1/2 tsp salt; 1/4 tsp black pepper; 2 tbsp chopped fresh parsley (optional)

cheesy potato casserole

Published on November 21, 2025

4.8 (245 reviews)

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Prep Time

20 min

Cook Time

45 min

Servings

Why You'll Love This Recipe

✓ Comfort in a Dish: A warm, cheesy layer of potatoes delivers nostalgic comfort while staying elegant enough for guests.

✓ One‑Pan Simplicity: All ingredients bake together, so cleanup is minimal and the flavors meld perfectly.

✓ Customizable: Swap cheese, add bacon, or blend in veggies; the base stays deliciously creamy.

Nothing says “home‑cooked comfort” like a bubbling, golden‑crowned casserole that brings together tender potatoes, rich cheese, and a hint of garlic. This Cheesy Potato Casserole is crafted for busy weeknights yet impressive enough for holiday tables. The recipe balances creamy interior with a lightly crisp top, delivering texture contrast that keeps every bite exciting. Whether you’re feeding a family of six or prepping leftovers, the dish stays moist and flavorful, making it a reliable go‑to in any kitchen.

1½ cups sharp cheddar cheese, grated Sharp cheddar provides bite; milder cheese works too.

½ cup mozzarella cheese, shredded Adds stretch and a silky melt.

1 cup heavy cream Creates a luxurious sauce; can replace half with milk.

½ cup whole milk Balances richness; any dairy milk works.

3 tbsp butter For the roux; can use margarine.

3 tbsp all‑purpose flour Thickens the sauce; gluten‑free flour works as a substitute.

1 cup chicken or vegetable broth Adds depth; low‑sodium preferred.

1 tsp smoked paprika Provides subtle smoky warmth; optional.

Salt and freshly ground black pepper Season to taste; adjust after tasting sauce.

Instructions

Prepare the potatoes

Preheat oven to 375°F (190°C). Slice potatoes 1/8‑inch thick, rinse, and pat dry. Layer half in a greased 9‑x‑13‑inch baking dish, sprinkling a pinch of salt and pepper over the layer.

Pro Tip: Use a mandoline for uniform slices; it speeds up cooking.

Make the cheese sauce

Melt butter in a saucepan over medium heat. Whisk in flour, cooking 1 minute until lightly golden. Gradually stir in broth, cream, and milk, whisking constantly until thickened, about 4‑5 minutes. Reduce heat and fold in cheddar, mozzarella, paprika, salt, and pepper until smooth.

Pro Tip: Add cheese off‑heat to prevent grainy texture.

Combine and top

Pour half of the cheese sauce over the first potato layer, spreading evenly. Add the remaining potatoes, then the rest of the sauce. Sprinkle an extra handful of cheddar on top for a golden crust.

Pro Tip: For extra crunch, add a thin breadcrumb layer before the final cheese.

Bake to perfection

Cover the dish with foil and bake for 30 minutes. Remove foil and continue baking 15‑20 minutes, or until potatoes are fork‑tender and the top is bubbling and golden brown.

Pro Tip: Let the casserole rest 10 minutes before serving; it sets for cleaner slices.

Serve and enjoy

Garnish with chopped chives or parsley for color. Serve hot alongside a crisp green salad or roasted vegetables for a complete dinner.

Pro Tip: Leftovers reheat well in the microwave or oven, covered with foil.

Expert Tips

Tip #1: Pre‑cook potatoes slightly

Steam potatoes for 5 minutes before layering; they finish cooking faster and stay creamy.

Tip #2: Use a double‑boiler for sauce

Gentle heat prevents scorching, giving a velvety texture without lumps.

Tip #3: Add a crunch topping

Mix panko breadcrumbs with melted butter and sprinkle before the final bake for extra texture.

Storage & Variations

Cool the casserole completely, then refrigerate in an airtight container for up to 4 days. Reheat covered at 350°F for 20 minutes. For a low‑fat version, substitute half the cream with low‑fat milk and use reduced‑fat cheese. Add cooked bacon, sautéed mushrooms, or spinach for protein and veggie boosts.

Frequently Asked Questions

Yes. Peel and slice sweet potatoes thinly; they add a subtle sweetness and vibrant color. Adjust seasoning with a pinch of cinnamon or nutmeg for harmony.

Cover the casserole with foil for the first 30 minutes of baking. Remove the foil for the final 15‑20 minutes to achieve a golden crust without over‑browning.

Yes. After cooling, wrap tightly and freeze for up to 2 months. Thaw overnight in the fridge, then bake as directed, adding 10‑15 minutes to the cooking time.

Sharp cheddar provides depth, while mozzarella adds stretch. For a gourmet twist, blend in Gruyère or smoked gouda. Avoid pre‑shredded cheese with anti‑caking agents for the smoothest sauce.