These Irresistible French Onion Beef Sloppy Joes take the classic comfort of sloppy joes and elevate it with rich French onion flavors, melty cheese, and perfectly seasoned beef. Served on toasted buns, these sandwiches are hearty, flavorful, and incredibly satisfying. Perfect for a weeknight dinner or game day gathering, they bring a delicious twist to a nostalgic favorite.
Why You’ll Love This Recipe
Rich Onion Flavor – Caramelized onions give a deep, savory taste.
Hearty & Filling – Ground beef makes this meal satisfying and protein-packed.
Melty Cheese – Gooey Provolone or Swiss takes it to the next level.
Quick & Easy – Ready in under 30 minutes with simple ingredients.
Ingredients
- 1 lb ground beef
- 2 large yellow onions, thinly sliced
- 2 tbsp unsalted butter
- 2 cloves garlic, minced
- 1 tsp Worcestershire sauce
- ½ tsp dried thyme
- 1 tbsp flour
- ½ cup beef broth
- 4 slices Provolone or Swiss cheese
- 4 hamburger buns, toasted
- Salt and black pepper to taste
Instructions
- Caramelize the Onions
In a large skillet, melt butter over medium heat. Add sliced onions and cook slowly, stirring often, for 15–20 minutes until golden and caramelized. Add garlic and cook for another minute. - Cook the Beef
Add ground beef to the skillet with onions. Season with salt, pepper, and thyme. Cook until beef is browned and fully cooked. - Make the Sauce
Sprinkle flour over the beef and onions, stirring to coat. Slowly pour in beef broth and Worcestershire sauce, stirring until mixture thickens slightly into a rich filling. - Assemble the Sloppy Joes
Spoon the beef and onion mixture onto toasted buns. Top each with a slice of cheese and let it melt before serving.

Nutritional Information
Calories: ~460
Protein: 29g
Fat: 22g
Carbohydrates: 38g
Sugar: 7g
Fiber: 2g
Tips for Success
- Low & Slow Onions – Take your time caramelizing onions for the best flavor.
- Choose the Right Cheese – Provolone for mild creaminess, Swiss for a nutty depth.
- Toast the Buns – Prevents sogginess and adds texture.
Why This Recipe Works
The caramelized onions add a sweet, savory depth that pairs perfectly with juicy ground beef, while the flour and broth create a rich, flavorful sauce. Topping with melty cheese ties everything together, transforming a simple sloppy joe into a gourmet sandwich.
Irresistible French Onion Beef Sloppy Joes are a comforting, flavorful twist on a classic. Quick to make yet rich in taste, they’re perfect for busy weeknights or anytime you want a hearty, cheesy, and satisfying meal.
Irresistible French Onion Beef Sloppy Joes – Savory, Cheesy, and Comforting
4
10
minutes20
460
kcalA hearty sandwich made with caramelized onions, seasoned ground beef, and melty cheese on toasted buns — a delicious twist on the classic sloppy joe.
Ingredients
1 lb ground beef
2 large yellow onions, thinly sliced
2 tbsp unsalted butter
2 cloves garlic, minced
1 tsp Worcestershire sauce
½ tsp dried thyme
1 tbsp flour
½ cup beef broth
4 slices Provolone or Swiss cheese
4 hamburger buns, toasted
Salt and black pepper to taste
Instructions
- Caramelize the Onions
In a large skillet, melt butter over medium heat. Add sliced onions and cook slowly, stirring often, for 15–20 minutes until golden and caramelized. Add garlic and cook for another minute. - Cook the Beef
Add ground beef to the skillet with onions. Season with salt, pepper, and thyme. Cook until beef is browned and fully cooked. - Make the Sauce
Sprinkle flour over the beef and onions, stirring to coat. Slowly pour in beef broth and Worcestershire sauce, stirring until mixture thickens slightly into a rich filling. - Assemble the Sloppy Joes
Spoon the beef and onion mixture onto toasted buns. Top each with a slice of cheese and let it melt before serving.
Notes
- Low & Slow Onions – Take your time caramelizing onions for the best flavor.
Choose the Right Cheese – Provolone for mild creaminess, Swiss for a nutty depth.
Toast the Buns – Prevents sogginess and adds texture.