French Onion Funeral Potatoes

Category: Satisfying Vegetarian Meals

Savor the combination of creamy potatoes, sharp cheddar, and tangy sour cream, all baked beneath a crisp layer of homemade fried onions. This side brings together tender hash browns in a fluffy, cheesy filling seasoned with hints of garlic, mustard, and cayenne for depth. Pouring over a homemade sauce and topping with golden fried onions creates irresistible texture and flavor. Ideal for sharing at holiday meals or potlucks, this dish transforms classic ingredients into a satisfying, comforting favorite.

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Updated on Fri, 19 Sep 2025 07:53:43 GMT
A baked dish with onions and cheese. Pin
A baked dish with onions and cheese. | quickdinnerfix.com

French Onion Funeral Potatoes are my twist on the ultimate comfort casserole. This recipe transforms classic funeral potatoes into a flavor-packed side dish with golden fried onions and a creamy homemade sauce. I love making these whenever I need to bring something irresistibly rich and satisfying to a family gathering or holiday feast.

I first brought these to a Thanksgiving dinner and everyone begged for the recipe before we sat down for dessert. These potatoes have now become our most requested holiday side.

Ingredients

  • Frozen cubed hash browns: For ultimate convenience and consistent texture Look for brands without added seasoning so you control the flavors
  • Unsalted butter: Essential for both the potatoes and the sauce Quality butter makes a difference in richness
  • Sharp cheddar cheese: Creates that classic gooey cheesy pull Shred your own if possible for fresher melt
  • Sour cream: Adds richness and that signature creamy tang Use full-fat for best results
  • Yellow onion: Used twice for depth and sweet flavor Pick firm onions without soft spots
  • Garlic: Provides an aromatic kick Choose fresh cloves for maximum punch
  • All-purpose flour: Thickens the sauce so it coats every potato cube Sift if possible for less lumpiness
  • Kosher salt: This enhances every layer Look for coarse grains for more control when seasoning
  • Black pepper: A touch of warmth Grate fresh for a more pronounced flavor
  • Cayenne pepper: Offers a subtle heat If you love spice you can add a pinch more
  • Dried mustard: Rounds out the savory notes Use fresh ground for the best taste
  • Chicken broth: Adds savory depth Opt for low-sodium so you can adjust seasoning
  • Whole milk: Makes the sauce luscious Whole milk is best for creaminess
  • Vegetable oil: For frying the onions Use a neutral oil for best crispiness
  • Fried yellow onions: The star crunchy topping Slice them as thin as possible for ultra-light crisp texture

Step-by-Step Instructions

Preheat the Oven:
Set your oven to 350 degrees Fahrenheit This ensures you can pop your casserole in as soon as everything is mixed
Mix the Potato Base:
In a large bowl combine thawed hash browns melted butter shredded cheddar and sour cream Stir until everything is evenly coated and set aside
Make the Sauce:
In a nonstick skillet melt butter over medium heat Add diced onions and stir until soft and sweet about three to five minutes Add minced garlic and let cook for another full minute so the kitchen smells amazing
Build the Roux and Flavor Base:
Sprinkle in flour salt black pepper cayenne pepper and dry mustard whisking them into the onion mixture Let it cook for another minute so the flour loses its raw taste
Thicken with Broth and Milk:
Slowly pour in chicken broth and milk while whisking constantly Continue whisking for several minutes until the mixture thickens into a silky sauce
Combine and Fill the Dish:
Pour the thickened sauce over the potato mixture Mix very well to distribute the sauce Then spread everything into your greased nine by thirteen inch baking dish
Bake the Casserole:
Slide the dish into the oven and bake for forty five to fifty minutes The edges should be bubbly and the cheddar golden
Fry the Onion Topping:
Heat vegetable oil in a saucepan to three hundred fifty degrees Fahrenheit Working in batches drop in thinly sliced onions and fry stirring until they turn pale golden Remove carefully with a slotted spoon and let them drain on a paper towel Sprinkle with salt while they are still warm
Add the Crunchy Topping:
Once the casserole is cooked top generously with crispy fried onions Spread them evenly so every bite gets crunch
Serve and Enjoy:
Let the casserole cool for just a few minutes then serve hot while the cheese is perfectly gooey
A casserole dish filled with cheesy, bacony goodness. Pin
A casserole dish filled with cheesy, bacony goodness. | quickdinnerfix.com

You Must Know

  • High in comfort factor this is always the most popular side on a potluck table
  • Completely made from scratch no condensed soups required
  • Easy to make ahead and bake later

I am obsessed with the crispy onions on top They turn each forkful into creamy crunchy heaven and my kids always fight over the corners with the most topping Last Christmas my father-in-law insisted on taking home leftovers and said the onions tasted better than any store bought can ever could

A casserole dish filled with potatoes and cheese. Pin
A casserole dish filled with potatoes and cheese. | quickdinnerfix.com

Storage Tips

Cool leftovers completely before covering tightly and refrigerating They will stay fresh for up to four days To reheat place in the oven at three hundred fifty degrees Fahrenheit until warmed through and crisp the onions under the broiler for a minute or two if needed Avoid microwaving with the onion topping as it will get soggy

Ingredient Substitutions

Swap in Monterey Jack cheese for a milder flavor or pepper jack if you prefer a kick You can make these vegetarian by using vegetable broth and check if your hash browns are meat free If you are short on time use canned fried onions though homemade is always best

Serving Suggestions

These potatoes pair perfectly with roast beef ham or any holiday main course I love them with simple roasted vegetables on the side Serve with a big green salad and you have an impressive meal for guests

Cultural and Historical Context

Funeral potatoes are rooted in Midwest and Mountain West culture often served at gatherings for their comfort and ability to feed a crowd The French onion twist adds layers of flavor and makes the dish even more crave worthy

Recipe FAQs

→ What type of potatoes work best in this casserole?

Frozen cubed hash browns are easiest, providing uniform texture and even cooking without extra prep work.

→ Can I use store-bought fried onions instead of homemade?

While homemade fried onions offer unbeatable flavor and crunch, store-bought versions are a convenient option.

→ How can I make this dish ahead of time?

You can assemble the casserole (without onions on top), cover, and refrigerate overnight. Add fried onions just before baking.

→ What cheese works well besides cheddar?

Swap cheddar for Gruyère or a cheese blend for a more nuanced flavor and excellent meltability.

→ Can I make it vegetarian?

Yes, simply use vegetable broth in place of chicken broth to keep the casserole meat-free.

French Onion Funeral Potatoes

Cheesy potatoes layered with crisp onions deliver a comforting, savory side perfect for gatherings or holiday meals.

Prep Time
20 min
Cook Time
50 min
Total Time
70 min

Category: Vegetarian

Skill Level: Intermediate

Cuisine: American

Yield: 12 Servings (1 large casserole)

Dietary Preferences: ~

Ingredients

→ Potato Base

01 900 g frozen cubed hash browns, thawed
02 57 g unsalted butter, melted
03 226 g sharp cheddar cheese, shredded
04 345 g sour cream

→ Cheese Sauce

05 57 g unsalted butter
06 1 small yellow onion, diced
07 2 teaspoons garlic, minced
08 31 g all-purpose flour
09 1 teaspoon kosher salt
10 0.5 teaspoon ground black pepper
11 0.5 teaspoon cayenne pepper
12 0.5 teaspoon dried mustard powder
13 120 g chicken broth, room temperature
14 122.5 g whole milk, room temperature

→ Crispy Fried Onions

15 2 large yellow onions, thinly sliced and layers separated (approx. 4 cups onions)
16 900 g vegetable oil
17 0.5 teaspoon kosher salt

Steps

Step 01

Preheat oven to 175°C. Grease a 23×33 cm baking dish with nonstick spray.

Step 02

In a large bowl, thoroughly combine thawed hash browns, melted butter, shredded cheddar cheese, and sour cream. Set mixture aside.

Step 03

Melt butter in a medium non-stick skillet over medium heat. Add diced onions and sauté until softened, 3–5 minutes. Stir in minced garlic and cook for 1 minute. Add flour, salt, black pepper, cayenne pepper, and dried mustard, stirring constantly for 1 minute.

Step 04

Gradually pour in whole milk and chicken broth, whisking continuously until fully combined. Continue whisking and cook until the sauce thickens.

Step 05

Pour the finished cheese sauce over the potato mixture. Stir to evenly combine, then transfer to the prepared baking dish.

Step 06

Bake in the preheated oven for 45–50 minutes, or until bubbling and thoroughly heated.

Step 07

While the casserole bakes, line a large baking sheet with two layers of paper towels. Heat vegetable oil in a large saucepan over high heat until it reaches 175°C. Working in batches, fry about 1 cup of sliced onions at a time, stirring occasionally, until pale golden brown, 2–5 minutes. Remove onions using a slotted spoon and place on the lined baking sheet. Repeat with remaining onions, ensuring the oil returns to temperature between batches.

Step 08

Immediately sprinkle the fried onions with kosher salt and toss to coat evenly.

Step 09

Once the casserole has finished baking, remove from the oven and evenly distribute the crispy fried onions over the top. Serve hot.

Notes

  1. Ensure the fried onions are prepared immediately before topping for maximum crispness.
  2. Allow the casserole to stand for a few minutes before serving to make portioning easier.

Required Equipment

  • Large mixing bowl
  • Non-stick skillet
  • Whisk
  • Large baking dish (23×33 cm)
  • Large saucepan
  • Slotted spoon or fine mesh strainer
  • Paper towels
  • Oven
  • Baking sheet

Allergy Information

Double-check each ingredient to identify potential allergens and consult a healthcare professional if unsure.
  • Contains milk (cheese, butter, sour cream, whole milk).
  • Contains gluten (all-purpose flour).

Nutrition Facts (Per Serving)

These details are for informational purposes and don’t replace medical advice.
  • Calories: 529
  • Fat: ~
  • Carbs: ~
  • Protein: ~