This slow cooker 4-ingredient Reuben sloppy joe recipe is a fun little twist my brother brought to a family party last year, and it disappeared before the game even started. It has all the cozy flavors of a classic Reuben sandwich—savory beef, tangy sauerkraut, creamy Thousand Island, and melty Swiss—without any extra fuss. Everything goes right into the slow cooker, so it’s perfect for busy days, potlucks, or when you just want to set it and forget it while the house fills with that rich, hearty smell.
Pile the warm Reuben sloppy joe mixture onto soft hamburger buns, hoagie rolls, or even toasted rye if your crew likes the traditional flavor. Serve with kettle chips, oven fries, or a simple green salad on the side to balance the richness. Pickles or baby carrots add a nice crunch, and if you’re feeding a crowd, keep the slow cooker on warm with a stack of buns nearby so everyone can build their own sandwiches as they go.
Slow Cooker 4-Ingredient Reuben Sloppy JoesServings: 8
Ingredients
2 pounds lean ground beef, browned and drained
2 cups refrigerated or jarred sauerkraut, drained but not rinsed
1 1/2 cups Thousand Island dressing
3 cups shredded Swiss cheese
Directions
Brown the ground beef in a large skillet over medium-high heat, breaking it up with a spoon as it cooks, until no pink remains. Drain off any excess grease.
Lightly spray the inside of your slow cooker with nonstick cooking spray for easier cleanup.
Add the cooked, drained ground beef to the slow cooker. Spoon in the drained sauerkraut and pour the Thousand Island dressing over the top.
Stir everything together until the beef, sauerkraut, and dressing are evenly combined and the mixture looks creamy and coated.
Sprinkle 2 cups of the shredded Swiss cheese over the beef mixture and gently fold it in, leaving some cheese streaks for that classic Reuben flavor.
Cover and cook on LOW for 3–4 hours or on HIGH for 1 1/2–2 hours, until the mixture is hot and bubbling around the edges and the sauerkraut is very tender.
About 15 minutes before serving, remove the lid and sprinkle the remaining 1 cup of Swiss cheese evenly over the top. Cover again just until the cheese melts into gooey, bubbly ribbons.
Give the mixture a gentle stir if you like it fully combined, or leave the cheese pooled on top for a more layered look. Switch the slow cooker to WARM for serving.
Serve the Reuben sloppy joe mixture hot on buns or rolls of your choice, spooning some of the juicy, cheesy beef and sauerkraut onto each sandwich.
Variations & Tips
For picky eaters, you can cut back on the sauerkraut to 1 cup and add an extra 1/2 cup of Thousand Island for a creamier, milder flavor. If someone in your house doesn’t love visible sauerkraut, chop it finely before adding so it blends in more. To lean into the classic Reuben taste, serve the mixture on toasted rye or marble rye bread instead of buns. You can also make these as sliders using Hawaiian rolls for parties—just spoon the mixture over the bottom halves, top with the roll tops, and keep them warm next to the slow cooker. If you prefer a little less richness, use light Thousand Island dressing and a reduced-fat Swiss; it still turns out cozy and satisfying. For a bit of extra flavor without adding more ingredients, season the browned beef lightly with salt, pepper, and a small pinch of caraway seeds (if you have them) before adding it to the slow cooker. Leftovers reheat well on the stovetop or in the microwave and make a great next-day baked potato topping.
