French Onion Beef Casserole Recipe

Cozy French Onion Beef Casserole Recipe for Homestyle Dinners

Hearty French onion beef casserole brings comfort straight to your dinner table with a mouthwatering blend of classic flavors.

Savory meat mingles with caramelized onions and rich cheese in this satisfying one-pan meal.

Nostalgia whispers through every delectable bite, promising warmth and satisfaction.

Layers of tender beef and golden-brown onions create a symphony of textures that dance across your palate.

Creamy melted cheese blankets each ingredient, ensuring maximum deliciousness in every forkful.

Weeknight dinners just got an incredible upgrade with this simple yet impressive dish.

Grab a spoon and let the culinary magic begin – you won’t be able to resist seconds!

French Onion Beef Casserole: Rich and Flavorful

  • Savor Comfort Food Bliss: A hearty, soul-warming dish that wraps you in pure culinary comfort with its rich, creamy texture and robust flavors.
  • Master Easy Cooking: Incredibly simple recipe that requires minimal cooking skills, making it perfect for beginners or busy home cooks who want a delicious meal without complicated techniques.
  • Create Family Crowd-Pleaser: Packed with cheesy, meaty goodness that appeals to all ages, this casserole turns dinnertime into a celebration of flavor everyone will love and request again and again.
  • Quick Weeknight Dinner Solution: Streamlined preparation and straightforward ingredients mean you can have a satisfying meal on the table with minimal effort, reducing kitchen stress and maximizing mealtime enjoyment.

Ingredients for French Onion Beef Casserole

Main Protein:
  • Ground Beef: A rich and hearty meat that provides the main protein base for the casserole.
Dairy Components:
  • Sour Cream, Shredded Cheese: Creamy ingredients that add richness and a smooth texture to the dish.
Soup and Seasoning:
  • French Onion Soup Mix: A flavorful blend that enhances the overall taste of the casserole.
  • Beef Broth: A savory liquid that adds depth and moisture to the meat mixture.
  • Cream of Mushroom Soup: A creamy base that helps bind the ingredients together.
Pasta and Vegetables:
  • Noodles: A comforting pasta that serves as the foundation of the casserole.
  • Onions: Caramelized onions that provide a sweet and complex flavor profile.
Cooking Essentials:
  • Olive Oil: Used for sautéing the onions and preventing sticking.
  • Parsley: A fresh herb used for garnishing and adding a touch of color.

How to Make French Onion Beef Casserole

Step 1: Caramelize Onions

Heat olive oil in a large skillet over medium heat.

Slowly cook sliced onions until they turn a rich golden brown and become soft and sweet, developing deep flavor.

This process typically takes 10-12 minutes.

Step 2: Brown the Beef

Add ground beef to the skillet with caramelized onions.

Cook until the meat is completely browned and no pink remains.

Carefully drain away any excess fat to keep the dish from becoming greasy.

Step 3: Create Flavor Base

Sprinkle French onion soup mix into the skillet.

Pour in beef broth and let the mixture simmer, allowing the flavors to meld together for 2-3 minutes.

The combination will create a rich, savory foundation for the casserole.

Step 4: Prepare Creamy Noodle Mixture

In a large mixing bowl, combine:
  • Cream of mushroom soup
  • Sour cream
  • Cooked noodles

Stir the ingredients until they are completely blended and create a smooth, creamy texture.

Step 5: Combine Beef and Noodle Mixtures

Pour the beef and onion mixture into the creamy noodle mixture.

Gently fold everything together, ensuring an even distribution of ingredients throughout the casserole.

Step 6: Assemble and Bake

Transfer the entire mixture into a greased 9×13-inch baking dish.

Generously sprinkle shredded cheese over the top, creating a golden, melty crust.

Step 7: Final Baking

Place the casserole in a preheated oven at 350°F (175°C).

Bake for 25-30 minutes, watching for the cheese to turn golden and start bubbling around the edges.

Step 8: Serve and Enjoy

Garnish the casserole with freshly chopped parsley for a pop of color and fresh flavor.

Serve hot and watch everyone dive in with excitement.

Tips for French Onion Beef Casserole

  • Take time to slowly cook onions over medium heat, stirring occasionally to develop rich, sweet flavors without burning.
  • Remove excess fat after browning ground beef to prevent a greasy casserole and ensure a cleaner, more concentrated meat taste.
  • Select a sharp cheddar or gruyere for maximum flavor and better melting properties that create a golden, crispy top layer.
  • Mix sour cream and cream of mushroom soup carefully to maintain a creamy texture without making the casserole too wet or dry.
  • Sprinkle freshly chopped parsley just before serving to add bright color and a subtle herbal note that lifts the entire dish.

Variations for French Onion Beef Casserole

  • Gluten-Free Version: Replace regular noodles with gluten-free egg noodles or rice noodles. Swap French onion soup mix with a gluten-free alternative and use cornstarch to thicken if needed.
  • Vegetarian Adaptation: Substitute ground beef with plant-based crumbles or lentils. Use vegetable broth instead of beef broth and mushroom-based cream soup for similar texture.
  • Low-Carb Option: Replace noodles with cauliflower rice or zucchini noodles. Use full-fat cream cheese instead of sour cream to maintain richness and decrease carbohydrate content.
  • Dairy-Free Alternative: Use dairy-free cheese alternatives like nutritional yeast or cashew cheese. Replace sour cream with coconut cream or dairy-free yogurt for creamy consistency.

Serving Ideas for French Onion Beef Casserole

  • Cozy Family Dinner Delight: Serve this hearty casserole with a crisp green salad to balance the rich flavors and add freshness to the meal.
  • Comfort Side Kick: Pair with roasted seasonal vegetables like Brussels sprouts or glazed carrots to complement the beef's savory profile.
  • Bread Lover's Dream: Offer crusty garlic bread or warm dinner rolls on the side to soak up the delicious sauce and complete the comfort food experience.
  • Wine Pairing Perfection: Enjoy with a medium-bodied red wine like Merlot or Cabernet Sauvignon to enhance the beef's robust taste and elevate the dining experience.

Storage Tips for French Onion Beef Casserole

  • Store leftovers in an airtight container within 2 hours of cooking, keeping the casserole fresh for 3-4 days in the refrigerator.
  • Transfer cooled casserole to freezer-safe containers, sealing tightly to prevent freezer burn. Properly stored, it maintains quality for up to 2-3 months.
  • Place individual portions on a microwave-safe plate, cover with a damp paper towel, and heat in 30-second intervals, stirring between each, until thoroughly warmed.
  • Preheat oven to 350F, cover casserole with foil to prevent drying, and warm for 15-20 minutes, adding a splash of broth to maintain moisture if needed.

FAQs

  • What makes the ground beef tender in this recipe?

Cooking the ground beef over medium heat and draining excess fat helps prevent toughness and ensures a juicy, flavorful meat texture.

  • Can I use a different type of soup mix?

French onion soup mix provides a specific flavor profile, but you can substitute with other savory soup mixes like beefy onion or mushroom to create a similar taste.

  • How do I know when the onions are properly caramelized?

Caramelized onions turn a deep golden-brown color and have a sweet, rich flavor. This usually takes 10-12 minutes of slow cooking over medium heat, stirring occasionally to prevent burning.

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French Onion Beef Casserole Recipe

French Onion Beef Casserole Recipe


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4.8 from 26 reviews

  • Total Time: 55 minutes
  • Yield: 4 1x

Description

Hearty French onion beef casserole melds classic French flavors with comforting midwestern cuisine. Melted cheese, caramelized onions, and tender beef create a satisfying meal you’ll savor to the last bite.


Ingredients

Scale

Main Protein:

  • 1 pound (454 grams) ground beef

Dairy and Cheese:

  • 2 cups shredded mozzarella or Swiss cheese
  • 1/2 cup sour cream
  • 1 tablespoon olive oil

Soup and Seasoning Ingredients:

  • 1 packet (1 ounce) French onion soup mix
  • 1 can (10.5 ounces) cream of mushroom soup
  • 1/2 cup beef broth
  • 1 medium onion, thinly sliced
  • 2 cups egg noodles, cooked
  • Salt and pepper to taste
  • Chopped parsley for garnish (optional)

Instructions

  1. Warmly prepare the oven to 350F (175C), ensuring a perfectly heated cooking environment.
  2. Gently caramelize sliced onions in a large skillet with olive oil over medium heat, developing rich golden-brown color for 10-12 minutes.
  3. Introduce ground beef to the skillet, browning thoroughly and carefully draining any accumulated fat.
  4. Infuse the meat with robust flavor by mixing French onion soup mix and beef broth, allowing the ingredients to meld for 2-3 minutes.
  5. Create a creamy base in a large mixing bowl by combining cream of mushroom soup and sour cream with cooked noodles.
  6. Fold the seasoned beef and caramelized onion mixture into the creamy noodle combination, ensuring even distribution of ingredients.
  7. Carefully transfer the mixed casserole contents into a generously greased 9×13-inch baking dish, spreading evenly.
  8. Sprinkle a generous layer of shredded cheese across the top, creating a golden, melty surface.
  9. Bake for 25-30 minutes until the cheese transforms into a bubbling, golden-brown crust.
  10. Finish by scattering fresh chopped parsley over the casserole for a vibrant, aromatic touch before serving.

Notes

  • Slow-caramelize onions by stirring frequently and reducing heat to prevent burning, creating deeper flavor complexity.
  • Drain ground beef thoroughly to minimize excess grease and maintain a lighter, less heavy casserole texture.
  • Choose low-sodium French onion soup mix and beef broth to control salt levels, especially for health-conscious diners.
  • Swap regular noodles with whole wheat or gluten-free alternatives to accommodate different dietary restrictions without compromising taste.
  • Prep Time: 25 minutes
  • Cook Time: 30 minutes
  • Category: Lunch, Dinner
  • Method: Baking
  • Cuisine: French

Nutrition

  • Serving Size: 4
  • Calories: 580 kcal
  • Sugar: 4 g
  • Sodium: 950 mg
  • Fat: 38 g
  • Saturated Fat: 18 g
  • Unsaturated Fat: 18 g
  • Trans Fat: 1 g
  • Carbohydrates: 27 g
  • Fiber: 2 g
  • Protein: 37 g
  • Cholesterol: 120 mg
Amanda Bennett

Amanda Bennett

Recipe Curator & Culinary Educator

Expertise

Baking and Pastry Arts, Recipe Testing and Development, Culinary Instruction, Food Styling and Photography

Education

​Asheville-Buncombe Technical Community College, Asheville, NC
​Diploma in Culinary Arts
Emphasized practical cooking skills, nutrition, and kitchen management.​

Cambridge School of Culinary Arts, Cambridge, MA
Certificate in Professional Pastry Arts
Specialized in baking techniques, dessert presentation, and flavor profiling


Amanda’s roots run deep in the Southern hills, where every meal started fresh from the garden and every dessert came with a story. She trained at Asheville-Buncombe Technical Community College and sharpened her pastry skills at the Cambridge School of Culinary Arts, blending classic technique with everyday charm.
At The Liffey, Amanda’s passion is making baking and home cooking feel natural and joyful. She’s all about single recipes that are simple enough for a busy afternoon, but special enough to make someone’s day a little sweeter.

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