French Onion Pot Roast

Featured in: Slow Comforts

This comforting dish combines slow-braised pot roast with deeply caramelized yellow onions and a rich blend of beef broth and white wine, bringing forth layers of savory depth. Topped with toasted rustic bread and melted Gruyère cheese, it offers a perfect balance of textures—crispy, creamy, and tender. Ideal for family meals, it requires slow oven baking to achieve fork-tender meat and golden bubbling cheese, finishing with fresh thyme for aromatic brightness.

Updated on Fri, 21 Nov 2025 09:21:00 GMT
Tender French Onion Pot Roast Casserole bubbling with melted Gruyère, inviting you to dig in. Save
Tender French Onion Pot Roast Casserole bubbling with melted Gruyère, inviting you to dig in. | moonthyme.com

A cozy, hearty casserole marrying the flavors of classic French onion soup with tender pot roast, topped with melty cheese and crisp bread. The ultimate comfort food hack for family dinners.

This recipe has become a staple at our family gatherings because it brings everyone together over a rich, flavorful meal that feels like a warm hug.

Ingredients

  • Meats: 2.5 lbs (1.1 kg) chuck roast, trimmed and cut into large cubes
  • Vegetables: 3 large yellow onions, thinly sliced, 3 cloves garlic, minced, 2 carrots, peeled and sliced
  • Liquids: 1 cup (240 ml) dry white wine, 2 cups (480 ml) beef broth, 2 tbsp Worcestershire sauce
  • Dairy: 2 cups (200 g) shredded Gruyère cheese, 2 tbsp unsalted butter
  • Breads: 4 cups (120 g) baguette slices or rustic bread cubes
  • Herbs & Seasonings: 1 tbsp fresh thyme leaves (or 1 tsp dried thyme), 2 bay leaves, 1 tsp kosher salt, plus more to taste, ½ tsp freshly ground black pepper
  • Oil: 2 tbsp olive oil

Instructions

Preheat Oven:
Preheat oven to 325°F (165°C).
Brown Beef:
Heat olive oil in a large Dutch oven over medium-high heat. Brown the beef cubes in batches, about 2–3 minutes per side. Transfer to a plate.
Caramelize Onions:
In the same pot, add butter and onions. Cook over medium heat, stirring often, until deeply caramelized and golden brown, about 25 minutes.
Sauté Vegetables:
Add garlic and carrots, sauté 2 minutes.
Add Wine:
Pour in white wine, scraping up browned bits from the bottom. Simmer 3 minutes.
Add Liquids & Seasonings:
Stir in beef broth, Worcestershire sauce, thyme, bay leaves, salt, and pepper. Return beef to the pot.
Bake Beef:
Cover and transfer to the oven. Bake for 2 hours, until beef is fork-tender.
Toast Bread:
Meanwhile, toast the bread cubes on a baking sheet at 325°F (165°C) for 10–12 minutes, until golden and crisp. Set aside.
Assemble Casserole:
Remove pot from oven. Discard bay leaves. Transfer beef and onions to a large casserole dish (3–4 qt).
Add Toppings:
Top evenly with toasted bread cubes, then sprinkle Gruyère cheese over the top.
Bake Topped Casserole:
Return casserole (uncovered) to the oven. Bake at 375°F (190°C) for 15–20 minutes, until cheese is melted and bubbly.
Rest:
Let rest 5 minutes before serving. Garnish with more thyme if desired.
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This casserole always brings the family around the table for stories and laughter, turning weeknights into special occasions.

Required Tools

Large Dutch oven or heavy pot, chefs knife, cutting board, baking sheet, 3–4 quart casserole dish

Allergen Information

Contains Dairy (cheese, butter) and Gluten (bread). May contain Sulfites (wine, Worcestershire sauce). Always check product labels for allergens.

Nutritional Information

Per serving: Calories 625, Total Fat 32 g, Carbohydrates 29 g, Protein 54 g

A close up of the richly flavored French Onion Pot Roast Casserole, perfect for a cold evening. Save
A close up of the richly flavored French Onion Pot Roast Casserole, perfect for a cold evening. | moonthyme.com

This recipe is best enjoyed fresh but also freezes well for easy weeknight dinners.

Recipe FAQ

What type of meat is best for this dish?

Chuck roast is ideal for its marbling and ability to become tender when slow-cooked, providing rich flavor and moist texture.

Can I substitute Gruyère with another cheese?

Swiss cheese works as a suitable swap, offering a similar creamy melt and mild flavor that complements the savory elements.

How do you achieve the caramelized onion flavor?

Slowly cooking thinly sliced yellow onions in butter over medium heat until golden brown develops the deep sweetness and rich flavor essential for this dish.

Is it necessary to toast the bread cubes before topping?

Toasting ensures crispy texture under the melted cheese, preventing sogginess and adding a pleasant crunch to each bite.

What herbs enhance the overall taste?

Fresh thyme and bay leaves infuse subtle earthy and fragrant notes, balancing the rich meat and cheese components.

Can this dish be prepared ahead of time?

Yes, it can be assembled and refrigerated before baking, allowing flavors to meld and easing mealtime preparation.

French Onion Pot Roast

Tender pot roast with caramelized onions, Gruyère, and toasted bread in a rich, flavorful casserole.

Prep Time
25 min
Time to Cook
150 min
Total Duration
175 min
Created by Lydia Brooks


Skill Level Medium

Cuisine American-French Fusion

Portions 6 Serving Size

Diet Info None specified

What You'll Need

Meats

01 2.5 pounds chuck roast, trimmed and cut into large cubes

Vegetables

01 3 large yellow onions, thinly sliced
02 3 cloves garlic, minced
03 2 carrots, peeled and sliced

Liquids

01 1 cup dry white wine
02 2 cups beef broth
03 2 tablespoons Worcestershire sauce

Dairy

01 2 cups shredded Gruyère cheese
02 2 tablespoons unsalted butter

Breads

01 4 cups baguette slices or rustic bread cubes

Herbs & Seasonings

01 1 tablespoon fresh thyme leaves or 1 teaspoon dried thyme
02 2 bay leaves
03 1 teaspoon kosher salt, plus more to taste
04 ½ teaspoon freshly ground black pepper

Oil

01 2 tablespoons olive oil

How to Make It

Step 01

Preheat Oven: Set the oven temperature to 325 degrees Fahrenheit (165 degrees Celsius).

Step 02

Brown the Beef: Heat olive oil in a large Dutch oven over medium-high heat. Brown beef cubes in batches for 2 to 3 minutes per side. Transfer browned meat to a plate.

Step 03

Caramelize Onions: Add unsalted butter to the same pot. Stir in sliced onions and cook over medium heat, stirring frequently, until deeply caramelized and golden brown, approximately 25 minutes.

Step 04

Sauté Garlic and Carrots: Add minced garlic and sliced carrots to the caramelized onions, cooking for 2 minutes until fragrant.

Step 05

Deglaze with Wine: Pour in dry white wine, scraping the bottom of the pot to loosen browned bits. Simmer for 3 minutes to reduce slightly.

Step 06

Add Broth and Seasonings: Incorporate beef broth, Worcestershire sauce, fresh thyme, bay leaves, kosher salt, and black pepper into the pot. Return the browned beef to the mixture.

Step 07

Braise in Oven: Cover the pot and place it in the preheated oven. Bake for 2 hours or until the beef is fork-tender.

Step 08

Toast Bread Cubes: Simultaneously, arrange bread cubes on a baking sheet and toast in the oven at 325 degrees Fahrenheit (165 degrees Celsius) for 10 to 12 minutes until golden and crisp. Set aside.

Step 09

Transfer Beef and Onions: Remove pot from oven and discard bay leaves. Transfer beef and caramelized onions to a 3–4 quart casserole dish.

Step 10

Assemble Casserole: Evenly layer toasted bread cubes over the beef and onion mixture. Sprinkle shredded Gruyère cheese on top.

Step 11

Bake Cheese Topping: Return the uncovered casserole dish to the oven preheated to 375 degrees Fahrenheit (190 degrees Celsius). Bake for 15 to 20 minutes until cheese is melted and bubbling.

Step 12

Rest and Serve: Allow the dish to rest for 5 minutes before serving. Garnish with additional thyme if desired.

Tools Needed

  • Large Dutch oven or heavy pot
  • Chef's knife
  • Cutting board
  • Baking sheet
  • 3 to 4 quart casserole dish

Allergen Details

Review every ingredient for allergens and ask a medical professional when unsure.
  • Contains dairy (cheese, butter) and gluten (bread).
  • May contain sulfites (wine, Worcestershire sauce).

Nutrition Details (each serving)

These details are for reference only, and shouldn't replace healthcare advice.
  • Energy: 625
  • Fats: 32 g
  • Carbohydrates: 29 g
  • Proteins: 54 g