Funeral Potatoes Recipe with Cream of Mushroom Soup: Creamy Mushroom Potato Casserole Magic

This funeral potatoes recipe with cream of mushroom soup delivers the comforting, creamy texture that makes it a Southern classic. 💛 I first learned to make these in Nana Mae's diner, where they were the star of every holiday meal—layered, baked to golden perfection, and impossible to resist.

The secret lies in balancing the rich mushroom flavor with tender potatoes and a velvety sauce that holds together beautifully.

What makes this recipe work is the simple layering technique: thinly sliced potatoes, a smooth cream of mushroom soup base, and just enough cheese to create that signature creamy finish.

It bakes in about 45 minutes at 375°F, transforming into a dish that's hearty enough to stand alone but perfect as a side for roasted meats. The texture is what truly sets it apart—creamy, tender, and just crispy enough at the edges.

By the time it emerges from the oven, you'll have a casserole with layers of golden potatoes, a rich mushroom-infused sauce, and a golden top that's hard to resist. This is the kind of dish that brings people together, whether it's for a family dinner or a holiday gathering.

The flavors are comforting and familiar, with just the right amount of depth from the mushroom soup.

For extra richness, I often add a sprinkle of breadcrumbs on top before baking, which creates a delightful crunch. Serve it warm with a side of green beans or a fresh salad for a complete meal. Here's everything you need to bring this Southern classic to your table.

Ingredients for funeral potatoes recipe with cream of mushroom soup

Everything you need for Nana Mae's legendary creamy mushroom potato casserole.

The potatoes are the heart of this dish. Russets work best—they hold up to slicing and baking without turning mushy. Grab a 3-pound bag from the grocery store, but if you're feeling fancy, organic potatoes from Whole Foods have that extra-smooth texture. Thinly slice them (about 1/8-inch thick) while they're still cold—peeling isn't required, but it gives a cleaner look. For the cheese, sharp cheddar melts beautifully, but Gruyère or Monterey Jack add nice variations. I always buy pre-shredded for convenience (the kind in the canister), but freshly grated gives the best melt.

No cream of mushroom soup? Homemade is easy—just blend sautéed mushrooms, milk, butter, and a splash of cream. Short on butter? Olive oil works fine, but it won't taste the same. The breadcrumbs should be panko for maximum crunch, but regular breadcrumbs work in a pinch. Fresh parsley is lovely, but dried parsley at half the amount gets the job done. For extra richness, stir a splash of heavy cream into the soup mixture. And if you're watching calories, use low-fat cheese and skim milk—it'll still taste great.

This casserole reheats beautifully—just cover it with foil and warm in the oven for 15 minutes. Keeps for 4 days in the fridge and freezes for 3 months. I always make a double batch because it's that good. For serving, I like to sprinkle extra cheese on top and broil for 2 minutes (watch it like a hawk!) to get that golden, bubbly finish. Pairs perfectly with roasted chicken or green beans—just like Nana Mae served it.

Step-by-step instructions for creamy mushroom potato casserole

Here's how to make this comforting classic with rich, creamy layers and crispy toppings.

Start by peeling the 3 lb russet potatoes if desired, then slice them into ¼-inch thick rounds. You'll get about 6 cups of sliced potatoes. Place them in a large pot and cover with cold water by about 1 inch. Add 1 tsp salt and bring to a boil over high heat.

Once boiling, reduce heat to medium-high and cook for 5-7 minutes until the edges just begin to soften but the centers remain slightly firm. Drain immediately in a colander and give them a gentle shake to release excess water. This partial cooking prevents a gummy texture later. Spread them on a baking sheet to cool slightly while you prep the other ingredients.

In a large mixing bowl, combine the 2 cups cream of mushroom soup, 0.5 cup milk, 0.5 cup melted butter, and 2 cups shredded sharp cheddar cheese. Whisk until smooth and fully melted. The cheese should blend completely with no lumps remaining.

Add the finely chopped yellow onion and minced garlic cloves to the mixture. Stir well to distribute them evenly. Here's the thing—don't skip this step. The onion and garlic will mellow out during baking, adding subtle flavor without overpowering the creamy base. Taste and adjust seasoning with additional salt or black pepper if needed.

Preheat your oven to 375°F. Grease a 9x13-inch baking dish with 1 tbsp olive oil—this prevents sticking and makes cleanup easier. Spread half of the parboiled potatoes evenly across the bottom of the dish, overlapping slightly.

Pour half of the mushroom mixture over the potatoes, spreading it evenly. Top with the remaining potatoes, then add the rest of the mushroom mixture. The potatoes should be mostly covered but visible at the surface. This layering creates that perfect creamy texture throughout.

In a small bowl, mix together the 0.5 cup breadcrumbs, 1 tbsp dried parsley, 1 tbsp melted butter, and a pinch of salt. Sprinkle this mixture evenly over the top of the casserole, pressing down gently with your fingers. This creates a golden, crispy crust that everyone will love.

Bake uncovered for 45-50 minutes until the top is golden brown and the edges bubble slightly. The casserole is done when the cheese is fully melted and the potatoes are tender all the way through. If the top browns too quickly, tent loosely with foil for the last 10 minutes to prevent burning.

Remove the casserole from the oven and let it rest for 10-15 minutes before serving. This resting time allows the layers to set slightly and makes it easier to slice. The creamy mushroom mixture should have thickened beautifully, coating each tender potato perfectly.

I know it seems counterintuitive to wait, but trust me—this step ensures clean slices and prevents a runny casserole. Serve warm with a side of steamed green beans or a simple salad. The crispy topping will melt slightly when you cut into it, releasing that rich, creamy goodness underneath. This dish tastes even better the next day, so consider making it ahead for your gathering!

Make-ahead tips for this funeral potatoes recipe with cream of mushroom soup

Prep Ahead for Perfection

I always recommend assembling this casserole the night before—it gives the flavors time to meld beautifully. After layering the potatoes and sauce in your 9x13-inch baking dish, cover it tightly with plastic wrap or aluminum foil and refrigerate.

The next day, simply pop it in the oven straight from the fridge for 50-55 minutes at 375°F (add 5 extra minutes if coming from cold). This method ensures even cooking and prevents a soggy bottom. 💫

Freezer-Friendly Magic

This casserole freezes like a dream—just assemble it completely (including the breadcrumb topping) and bake for 30 minutes at 375°F. Let it cool completely, then wrap tightly in heavy-duty foil or place in a freezer bag with all air removed.

Thaw overnight in the fridge before baking as directed. Pro tip: Label your freezer bag with the date—it keeps for up to 3 months with zero quality loss. I've tested this with David, and he swears it tastes just as good reheated as fresh!

Portion Control Secrets

For gatherings, divide the baked casserole into individual 8x8-inch pans before serving. This makes it easy to reheat single portions—just cover with foil and warm in the oven at 350°F for 15 minutes. I also love using ramekins for elegant servings at holiday dinners.

For extra crispiness, broil for 2-3 minutes after reheating. The key is low and slow—never microwave unless you want a sad, rubbery texture. 🔥

Make-Ahead Ingredient Prep

Save time by prepping ingredients the day before. Slice and parboil the potatoes, then store them in the fridge in a sealed container with a splash of water to prevent drying. Mix the mushroom sauce ingredients (except cheese) ahead and refrigerate in a jar.

When ready to assemble, just whisk in the cheese and proceed with the recipe. This shortcut cuts your active cooking time by half—perfect for busy days. I do this all the time when hosting family dinners in Austin.

Oven Temperature Tips

If your oven runs hot, reduce the temperature to 350°F and bake for 55-60 minutes to prevent over-browning. I test this with my oven's built-in thermometer—some ovens can be off by 25°F!

For even better results, place a water bath around the baking dish: fill a larger pan with 1 inch of hot water, then nestle your casserole dish inside. This keeps the center creamy while the edges crisp. Trust me, this trick makes all the difference for restaurant-quality results. 💡

Reheating Leftovers

Leftovers taste even better the next day! Cover the casserole with foil and reheat in the oven at 350°F for 20-25 minutes until warmed through. For microwave reheating, cover with a damp paper towel and heat in 30-second intervals on 50% power, stirring between each interval.

Avoid high heat—it turns the potatoes gummy. I always double the recipe because this dish disappears faster than Biscuit can chase a squirrel! 🥔

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