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French Onion Beef Sloppy Joes Recipe

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4.6 from 9 reviews

A savory twist on the classic sloppy joe, this French Onion Beef Sloppy Joes recipe features caramelized onions, tender ground beef, and melted Swiss cheese on toasted hamburger buns for a deliciously rich and flavorful sandwich perfect for a quick dinner.

Ingredients

Main Ingredients

  • 1 pound ground beef (85% lean)
  • 1 large onion, thinly sliced
  • 2 cloves garlic, minced
  • 1 tablespoon olive oil
  • 1 teaspoon Worcestershire sauce
  • 1 teaspoon soy sauce
  • 1 teaspoon dried thyme
  • Salt and pepper to taste
  • 4 hamburger buns
  • 1 cup shredded Swiss cheese
  • Fresh parsley, chopped (optional for garnish)

Instructions

  1. Heat the oil: Heat olive oil in a large skillet over medium heat to prepare for caramelizing onions.
  2. Caramelize onions: Add the thinly sliced onions to the skillet and cook for 10-12 minutes, stirring often, until they are golden and caramelized.
  3. Add garlic: Stir in the minced garlic and cook for 1-2 minutes until fragrant.
  4. Cook beef: Add the ground beef to the skillet and cook until fully browned, breaking it apart with a spatula for even cooking.
  5. Drain fat and season: Drain any excess fat from the skillet, then stir in Worcestershire sauce, soy sauce, dried thyme, and season with salt and pepper to taste.
  6. Simmer mixture: Let the beef and onion mixture simmer for 5 minutes so the flavors meld together.
  7. Toast buns: While the beef simmers, toast the hamburger buns until golden and slightly crisp.
  8. Assemble sandwiches: Spoon the beef mixture onto the bottom halves of the toasted buns, top each with shredded Swiss cheese, then place the top bun over the filling.
  9. Garnish and serve: Optionally garnish with freshly chopped parsley before serving for a fresh touch.

Notes

  • Use 85% lean ground beef for a good balance of flavor and fat content.
  • Caramelizing onions slowly enhances the sweetness and depth of flavor.
  • Drain excess fat to keep the sandwich lower in fat and prevent greasiness.
  • To make this recipe gluten free, substitute hamburger buns with gluten-free buns.
  • Swiss cheese melts beautifully but you can substitute with Gruyere or mozzarella if preferred.
  • Adding fresh parsley adds color and a subtle herbal note.
  • For a spicier version, add a pinch of cayenne or red pepper flakes during seasoning.