Slow Cooker Reuben Melts

Posted on February 4, 2025

Slow-cooker comfort with a sandwich shop twist—these Slow Cooker Reuben Melts make weeknights feel like a treat. Tender corned beef simmers low and slow with classic Reuben flavors, then gets piled onto toast with Swiss and extra sauerkraut for melty, tangy perfection. This recipe is cozy, hands-off, and totally shareable—perfect for busy nights and hungry families.

If you like one-pot convenience, try this savory slow cooker chicken and rice casserole for busy nights to keep your meal rotation exciting and simple: slow cooker chicken and rice casserole.

Why You’ll Love This Slow Cooker Reuben Melts

Hands-off slow cooker method means minimal prep and huge flavor payoff.
Family-friendly: picky eaters love the melty cheese and toasty bread.
Make-ahead potential—cook the corned beef ahead and assemble when ready.
Budget-friendly: corned beef and pantry staples stretch a long way.
Crowd-pleaser for game day or casual dinner parties.

This comforting sandwich adapts well to sides and other slow-cooker mains—try techniques from this slow cooker lemon herb chicken and rice to help time multiple dishes: slow cooker lemon herb chicken and rice.

Ingredients Needed

Protein

2–3 lb corned beef brisket (with spice packet if included)
1 cup beef broth

Sauce & Spread

1 cup Thousand Island dressing (or Russian dressing)
2 tbsp Dijon mustard

Veg & Cheese

1 cup drained sauerkraut, well-rinsed and patted dry
8–12 slices Swiss cheese

Bread & Finishing

8 slices rye or marble rye bread
2 tbsp butter, softened for grilling the assembled melts

Pantry spices

1 tsp onion powder
Freshly ground black pepper, to taste

Need other slow-cooker inspiration while you plan sides? This slow cooker beef ramen noodles recipe offers another cozy main to rotate through busy weeks: slow cooker beef ramen noodles.

Step-by-Step Instructions

Trim excess fat from the corned beef and place it fat-side up in the slow cooker. Pour beef broth around the sides. Sprinkle the included spice packet or onion powder and pepper over the top.
Cook on LOW for 8–9 hours or HIGH for 4–5 hours, until the meat is fork-tender.
Remove the brisket, let rest 10 minutes, then slice thinly across the grain. Mix a little of the cooking liquid into the Thousand Island dressing to loosen if desired.
Preheat a skillet or griddle over medium heat. Assemble sandwiches: bread, spread with dressing, layer Swiss, sauerkraut, and generous slices of corned beef; top with the second slice of bread.
Butter the outsides and grill 2–3 minutes per side until golden and cheese is melted. Serve hot.

For quick shredding and seasoning hacks that speed assembly, check this slow cooker chicken tacos tutorial for useful prep shortcuts you can adapt here: slow cooker chicken tacos tips.

Serving Suggestions Slow Cooker Reuben Melts

Serve with kettle chips and a simple dill pickle for classic deli vibes.
A light cabbage slaw or roasted potato wedges complements the richness.
For a lighter plate, pair a single melt with a crisp green salad and lemon vinaigrette.
Make an open-faced version and broil for 1–2 minutes for extra melty, browned tops.

Tips for Success Slow Cooker Reuben Melts

Dry the sauerkraut well to avoid soggy sandwiches—press with paper towels.
Slice the corned beef thin across the grain for tender bites.
If your corned beef came with a spice packet, taste before adding extra salt—the meat can be salty.
Toast or grill on medium heat so the cheese melts before the bread over-browns.
Leftovers reheat well: reassemble and warm in a 350°F oven for 10–12 minutes to revive crispness.

Want alternative flavor profiles? Try pairing corned beef with a mild mustard aioli or swap Swiss for provolone—ideas inspired by the lemon-herb comfort of a slow-cooker rice recipe: lemon herb chicken and rice recipe.

variation (if any)

Vegetarian option: substitute a seasoned seitan or thick portobello slices for corned beef and follow the same assembly steps.
Mini sliders: use small rolls and melt under a broiler for quick party bites.
Spicy Reuben: mix 2 tbsp Sriracha into the Thousand Island for a peppery kick.

FAQs

Q: Can I make the corned beef a day ahead?
A: Yes. Cook it, cool, refrigerate in its cooking liquid, and slice or reheat the next day. This boosts flavor and cuts evening assembly time.

Q: How do I prevent soggy bread?
A: Drain the sauerkraut thoroughly and toast the bread lightly before assembling. Butter the outsides and grill at medium heat to crisp the crust while the cheese melts.

Q: Can I use deli corned beef instead of cooking a brisket?
A: Absolutely. Deli corned beef is a great shortcut—use about 12–16 oz and layer it into the sandwiches without slow cooking.

Q: What’s the best cheese substitute if I don’t have Swiss?
A: Provolone or Gouda melt well and complement the tangy sauerkraut if Swiss isn’t available.

Q: Can I freeze assembled melts?
A: Assemble without grilling, wrap tightly, and freeze up to 2 months. Thaw overnight and grill from chilled, adding a minute or two per side to heat through.