French Onion Beef Sloppy Joes Recipe

Introduction

French Onion Beef Sloppy Joes offer a savory twist on a classic comfort food. Caramelized onions and rich Gruyere cheese elevate the hearty beef filling, making these sandwiches perfect for a satisfying weeknight dinner or casual gathering.

Ingredients

• 2 tablespoons olive oil
• 2 large yellow onions, thinly sliced
• 1 teaspoon granulated sugar
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper
• 1 pound ground beef (80/20 blend recommended)
• 1 teaspoon garlic powder
• 1/2 teaspoon dried thyme
• 1/4 teaspoon red pepper flakes (optional)
• 1 cup beef broth
• 1/2 cup dry red wine (such as Merlot or Cabernet Sauvignon)
• 2 tablespoons Worcestershire sauce
• 1 tablespoon balsamic vinegar
• 1 tablespoon Dijon mustard
• 6 hamburger buns, split
• 4 ounces Gruyere cheese, shredded
• Fresh parsley, chopped (for garnish, optional)

Instructions

1. Step 1: Heat the olive oil in a large, heavy-bottomed skillet or Dutch oven over medium heat.
2. Step 2: Add the thinly sliced onions to the skillet, spreading them in an even layer. Cook, stirring occasionally, for 10-15 minutes until they begin to soften and become translucent.
3. Step 3: Sprinkle the granulated sugar, salt, and pepper over the onions. Reduce heat to low and cook, stirring every 10-15 minutes, for 45-60 minutes until the onions are deep golden brown and very soft. Add a splash of water or beef broth if they start to stick or burn, scraping up browned bits from the pan.
4. Step 4: Remove the caramelized onions from the skillet and set aside.
5. Step 5: In the same skillet, brown the ground beef over medium-high heat, breaking it up with a spoon as it cooks. Drain off excess fat.
6. Step 6: Add garlic powder, dried thyme, and red pepper flakes (if using) to the beef. Stir and cook for another minute.
7. Step 7: Pour in beef broth and red wine. Bring to a simmer, scraping up browned bits from the bottom of the pan.
8. Step 8: Stir in Worcestershire sauce and balsamic vinegar. Reduce heat to low and simmer for 15-20 minutes until the sauce thickens slightly, stirring occasionally.
9. Step 9: Return the caramelized onions to the beef mixture and stir to combine.
10. Step 10: Stir in Dijon mustard and adjust seasoning to taste.
11. Step 11: Split the hamburger buns in half. Spoon the beef and onion mixture onto the bottom halves of the buns.
12. Step 12: Sprinkle shredded Gruyere over the beef mixture on each bun.
13. Step 13: Place the assembled sandwiches on a baking sheet. Broil in the oven for 2-3 minutes until the cheese melts and bubbles, watching carefully to avoid burning.
14. Step 14: Garnish with fresh chopped parsley if desired and serve immediately.

Tips & Variations

• Use a mix of red wine and extra beef broth if you prefer a milder wine flavor.
• Substitute Gruyere with Swiss or mozzarella for a different cheese twist.
• For extra depth, add a splash of soy sauce or a pinch of smoked paprika to the beef mixture.
• Try serving on sturdy buns like brioche or pretzel rolls to hold up to the saucy filling.

Storage

Store any leftover beef mixture in an airtight container in the refrigerator for up to 3 days. Reheat gently on the stovetop or in the microwave until warmed through. Assemble sandwiches fresh before serving to keep buns from getting soggy.

How to Serve

Serve this delicious recipe with your favorite sides.

FAQs

Can I make this recipe without wine?

Yes, you can replace the red wine with additional beef broth or a splash of balsamic vinegar for acidity. The flavor will be slightly different but still delicious.

How do I caramelize onions properly?

Cook sliced onions slowly over low heat, stirring occasionally for about 45-60 minutes. Adding a pinch of sugar helps them brown evenly, and if they stick, add a bit of water or broth to loosen them without burning.

French Onion Beef Sloppy Joes Recipe

---

★★★★★

4.8 from 109 reviews

• Author: Hailey
• Total Time: 1 hour 30 minutes
• Yield: 6 servings 1x

Pin Recipe

Print Recipe

Description

French Onion Beef Sloppy Joes combine the rich, caramelized flavors of classic French onion soup with a hearty ground beef sloppy joe filling. This savory sandwich features tender browned onions, beef simmered in red wine and beef broth, seasoned perfectly and topped with melted Gruyere cheese for an indulgent twist on a traditional comfort food favorite.

---

Ingredients

Scale 1x2x3x

For the Caramelized Onions

• 2 tablespoons olive oil
• 2 large yellow onions, thinly sliced
• 1 teaspoon granulated sugar
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper

For the Beef Mixture

• 1 pound ground beef (80/20 blend recommended)
• 1 teaspoon garlic powder
• 1/2 teaspoon dried thyme
• 1/4 teaspoon red pepper flakes (optional)
• 1 cup beef broth
• 1/2 cup dry red wine (such as Merlot or Cabernet Sauvignon)
• 2 tablespoons Worcestershire sauce
• 1 tablespoon balsamic vinegar
• 1 tablespoon Dijon mustard

For Assembly

• 6 hamburger buns, split
• 4 ounces Gruyere cheese, shredded
• Fresh parsley, chopped (for garnish, optional)

---

Instructions

1. Heat the oil and cook onions: Heat the olive oil in a large heavy-bottomed skillet or Dutch oven over medium heat. Add the thinly sliced onions and spread them in an even layer. Cook, stirring occasionally, for 10-15 minutes until they begin to soften and become translucent.
2. Caramelize the onions: Sprinkle the granulated sugar, salt, and pepper over the onions. Reduce the heat to low and cook, stirring occasionally every 10-15 minutes, for 45-60 minutes until the onions are a deep golden brown and very soft. Add a tablespoon or two of water or beef broth if the onions begin to stick or burn, scraping up any browned bits from the bottom.
3. Set caramelized onions aside: Remove the deeply caramelized onions from the skillet and set aside for later.
4. Brown the ground beef: In the same skillet or Dutch oven, brown the ground beef over medium-high heat, breaking it up with a spoon as it cooks. Drain off any excess fat once browned.
5. Season the beef: Add the garlic powder, dried thyme, and optional red pepper flakes to the beef. Stir well and cook for another minute to blend the flavors.
6. Deglaze and simmer: Pour in the beef broth and red wine, bringing the mixture to a simmer while scraping up any browned bits from the pan bottom. Stir in Worcestershire sauce and balsamic vinegar.
7. Thicken the sauce: Reduce the heat to low and simmer for 15-20 minutes, stirring occasionally, until the sauce has thickened slightly.
8. Add caramelized onions and mustard: Stir the caramelized onions back into the beef mixture, then mix in the Dijon mustard. Taste and adjust seasoning if needed.
9. Prepare buns and assemble: Split the hamburger buns in half and spoon the beef and onion mixture evenly onto the bottom halves.
10. Add cheese and broil: Sprinkle shredded Gruyere cheese over the beef mixture on each bun. Arrange the assembled sloppy joes on a baking sheet and broil in the oven for 2-3 minutes, or until the cheese is melted, bubbly, and lightly browned. Watch carefully to avoid burning.
11. Garnish and serve: Garnish with chopped fresh parsley if desired and serve immediately.

Notes

• Caramelizing the onions low and slow is key for developing deep flavor—do not rush this step.
• Use a heavy skillet or Dutch oven to evenly distribute heat for caramelization and browning.
• Drain excess fat from ground beef to avoid a greasy sloppy joe.
• Red wine is important for authentic flavor but can be substituted with additional beef broth in a pinch.
• Watch the sloppy joes closely when broiling to prevent the cheese from burning.
• This recipe can be prepared a day ahead by making the beef mixture and storing separately; reheat before assembling and broiling.

• Prep Time: 15 minutes
• Cook Time: 1 hour 15 minutes
• Category: Main Course
• Method: Stovetop
• Cuisine: American

Keywords: French onion, sloppy joes, ground beef, caramelized onions, Gruyere, comfort food, red wine, sandwich