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Steakhouse Burger Sloppy Joes with Cheddar & Mushrooms are what I make when burgers sound good but standing over patties does not. You still get the browned beef, mushrooms, tangy steak sauce, and melted cheddar, but the whole thing cooks in one skillet.
The mushrooms matter here. They soak up the pan drippings and steak seasoning, then give the filling that deep, savory bite you expect from a diner burger. Toast the buns and spoon the filling on hot so the cheddar softens right into the beef.
Steakhouse Burger Sloppy Joes Cheddar Mushrooms
This filling is simple, so each ingredient has a job. Use 85 percent lean beef for moisture, fresh mushrooms that feel firm, and sharp cheddar you shred yourself if you want the best melt.
- Ground beef. Gives the sandwich its burger flavor and hearty texture.
- Cremini mushrooms. Add earthy depth and soak up the steakhouse sauce.
- Yellow onion. Sweetens as it cooks and rounds out the beef.
- Beef broth. Forms the base of the sauce and keeps the filling juicy.
- Steak sauce. Brings tang, spice, and that familiar steakhouse bite.
- Dijon mustard. Cuts the richness and keeps the sauce from tasting heavy.
- Worcestershire sauce. Adds salty umami that makes the beef taste deeper.
- Montreal steak seasoning. Adds pepper, garlic, and savory grill-style flavor.
- All-purpose flour. Thickens the pan sauce so it clings to the meat.
- Sharp cheddar. Melts into the hot filling and gives each bite a cheeseburger finish.
- Burger buns. Hold the saucy filling best when split and toasted.
Build The Skillet Filling
- Mix the sauce. Whisk the beef broth, steak sauce, Dijon, and Worcestershire in a cup so it is ready when the skillet is hot.
- Brown the beef. Cook the ground beef in a wide skillet over medium-high heat until no pink remains. Drain excess grease, then move the beef to a plate.
- Cook the mushrooms. Melt the butter in the same pan. Add the mushrooms, onion, and steak seasoning, then cook until the mushrooms are browned and the onion is soft.
- Toast the flour. Sprinkle flour over the mushroom mixture and stir for 1 minute. It should look slightly dry and smell nutty.
- Simmer until thick. Return the beef to the skillet and pour in the sauce. Simmer for 3-5 minutes until glossy and thick enough to scoop.
- Assemble hot. Spoon the filling onto toasted buns, top with shredded cheddar, and close the sandwiches while the beef is still hot enough to soften the cheese.
Brown The Mushrooms Hard
Mushrooms need a little patience. If you stir them constantly, they steam and turn soft before they ever brown. Spread them across the skillet and let them sit for a minute at a time. The edges should darken and the pan should smell savory, not watery.
A wide skillet helps because the mushrooms and onions need room. If your pan is small, cook the beef first, remove it, then give the vegetables their own time in the drippings and butter. For another mushroom-heavy side that uses the same browning idea, try these cowboy mushrooms.
Keep The Sauce Spoonable
The best sloppy joe filling is loose enough to feel juicy but thick enough to stay on the bun. Flour gives the broth and steak sauce a little body. Let it cook with the mushrooms for about a minute before adding liquid so the sauce does not taste pasty.
After the sauce goes in, simmer until a spoon dragged through the pan leaves a brief trail. If it tightens too much, add a splash of broth. If it looks runny, give it another minute. Ground beef should be cooked to 160 F for food safety, according to the USDA safe temperature chart.
Cheddar Goes On Last
Sharp cheddar is best here because it can stand up to steak sauce and browned beef. Add it after the filling hits the bun, not while the sauce is simmering. Stirring cheddar into the whole skillet can make the sauce greasy if the heat is too high.
If you like this flavor lane, the original Steakhouse Burger Sloppy Joes keeps things classic, while Philly Cheesesteak Sloppy Joes lean harder into peppers and melty cheese. Swiss also works if you want a mushroom-burger feel like a Swiss mushroom burger.
Make It Ahead Cleanly
The filling reheats well, which makes it useful for busy nights. Cool it quickly, then store it in a shallow airtight container in the fridge for up to 3 days. The USDA leftover guide recommends refrigerating cooked food within 2 hours.
Reheat the filling in a skillet over medium-low heat with a spoonful of broth or water. Toast the buns fresh. A microwave works for the meat, but the skillet keeps the texture better and helps the sauce loosen evenly.
Sides That Fit The Sandwich
These sandwiches are rich, so crisp sides help. Dill pickles, slaw, kettle chips, roasted broccoli, or a simple green salad all work. If you want a bigger plate, fries or onion rings fit the steakhouse mood.
You can also turn the filling into a toast-style dinner. Spoon it over garlic bread or thick toasted bread like these Texas Toast Sloppy Joes. It is messier, but the crisp edges are worth it.
FAQs
- What makes these steakhouse sloppy joes different from regular sloppy joes?
Regular sloppy joes lean sweet and tomato-heavy. This version uses steak sauce, Dijon, beef broth, mushrooms, onion, and cheddar for a more savory burger-style filling.
- Can I use ground turkey instead of ground beef?
Yes, but choose dark-meat ground turkey if you can. It stays juicier than extra-lean turkey. Add an extra teaspoon of steak sauce or Worcestershire if the filling tastes flat.
- What mushrooms work best?
Cremini mushrooms have a deeper flavor, but white button mushrooms work well too. Slice them thin so they brown quickly and blend into the beef instead of falling out of the sandwich.
- Can I make the filling ahead?
Yes. Cook the filling up to 2 days ahead and refrigerate it in an airtight container. Reheat it in a skillet with a splash of broth until hot, then assemble with fresh toasted buns.
- How do I keep the buns from getting soggy?
Toast the cut sides until lightly crisp before adding the filling. Also simmer the beef mixture until it is thick enough to mound on a spoon instead of running across the pan.
- Can this be made gluten-free?
Yes, with changes. Use gluten-free buns, gluten-free steak sauce, and replace the flour with a cornstarch slurry. Check the steak seasoning label because some blends contain anti-caking ingredients with gluten.
References
Sources cited in this recipe.
- https://www.bettycrocker.com/recipes/steakhouse-burger-sloppy-joes/e4a5885a-9a82-43ab-8166-0f11c32c3402
- https://www.fsis.usda.gov/food-safety/safe-food-handling-and-preparation/food-safety-basics/safe-temperature-chart
- https://www.fsis.usda.gov/food-safety/safe-food-handling-and-preparation/food-safety-basics/leftovers-and-food-safety
