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French Onion Beef Sloppy Joes

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These French Onion Beef Sloppy Joes combine the comfort of classic sloppy joes with the rich, savory flavors of French onion soup, all topped with gooey melted cheese. Perfect for busy weeknights or cozy family dinners, this recipe is hearty, satisfying, and ready in under 40 minutes.

Ingredients

Scale
  • 1 lb ground beef (80/20 preferred, but lean works)
  • 2 large yellow onions, thinly sliced
  • 2 tbsp unsalted butter
  • 1 tbsp olive oil
  • 2 cloves garlic, minced
  • 1/2 cup beef broth (low sodium preferred)
  • 1 tbsp Worcestershire sauce
  • 1 tsp Dijon mustard (optional)
  • 1 tsp salt (adjust to taste)
  • 1/2 tsp black pepper (adjust to taste)
  • 1 tsp fresh thyme leaves (or 1/2 tsp dried thyme)
  • 4–6 soft sandwich buns (brioche or any sturdy bun)
  • 4–6 slices provolone cheese (or Swiss, mozzarella, Gruyère, or cheddar)
  • Butter, for toasting buns (optional)
  • Chopped parsley, for garnish (optional)
  • Extra caramelized onions, for topping (optional)

Instructions

  1. Heat 2 tablespoons butter and 1 tablespoon olive oil in a large skillet over medium-low heat. Add sliced onions, sprinkle with a pinch of salt, and cook, stirring often, until onions are soft and deep golden brown (15–20 minutes). If onions stick, add a splash of beef broth or water. Transfer half to a plate for topping, if desired.
  2. Increase heat to medium. Add ground beef to the skillet with remaining onions. Break up the meat and cook until browned and no longer pink (5–7 minutes). Drain excess fat, leaving a little for flavor.
  3. Stir in minced garlic and cook for 1 minute until fragrant. Add Worcestershire sauce, beef broth, Dijon mustard, thyme, and black pepper. Mix well, scraping up any browned bits. Simmer for 2–3 minutes until slightly thickened.
  4. Lay cheese slices directly over the beef mixture. Cover the pan and reduce heat to low. Let cheese melt until bubbly and gooey, about 3 minutes. If your skillet isn’t covered, tent with foil. Once melted, gently swirl the beef so the cheese mixes in.
  5. While cheese melts, butter the insides of your sandwich buns. Toast cut-side up on a baking sheet under the broiler for 1–2 minutes until golden, or toast in a skillet for extra crunch.
  6. Spoon the cheesy beef and onion mixture onto each bun. Top with reserved caramelized onions and parsley if desired. Serve hot.

Notes

For gluten-free, use GF buns or serve over potatoes. For vegetarian, use plant-based ground ‘beef’ and vegetable broth. Caramelize onions slowly for best flavor. Cheese can be swapped for Swiss, Gruyère, cheddar, or dairy-free alternatives. Leftover filling keeps well and tastes even better the next day. Toasting buns prevents sogginess.

Nutrition

Keywords: French onion, sloppy joes, beef, melted cheese, easy dinner, comfort food, caramelized onions, provolone, weeknight meal, family recipe

Find it online: https://tempotaste.com/french-onion-beef-sloppy-joes-recipe-easy-melted-cheese-dinner/