Transform your typical sandwich routine with these slow cooker corned beef Reuben sandwiches. This recipe combines tender, flavorful corned beef with tangy sauerkraut, creamy Russian dressing, and melted Swiss cheese, all nestled between slices of buttery rye bread. Perfect for a hearty lunch or dinner, these sandwiches are sure to become a family favorite.
If you don't typically have corned beef brisket or Russian dressing in your pantry, you'll need to pick these up at the supermarket. Corned beef brisket often comes with a spice packet, which is essential for this recipe. Russian dressing, a creamy and tangy condiment, can sometimes be found near the salad dressings or in the deli section.

Ingredients for Slow Cooker Corned Beef Reuben Sandwiches
Corned beef brisket: A cut of beef that is cured in a seasoned brine, often sold with a spice packet for added flavor.
Rye bread: A type of bread made with rye flour, known for its slightly sour taste and dense texture.
Swiss cheese: A mild, nutty cheese that melts beautifully, perfect for sandwiches.
Sauerkraut: Fermented cabbage that adds a tangy crunch to the sandwich.
Russian dressing: A creamy, tangy dressing made with mayonnaise, ketchup, and various seasonings, adding a unique flavor to the sandwich.
Technique Tip for Perfect Corned Beef Reuben Sandwiches
To ensure your corned beef is tender and flavorful, make sure to cook it on low heat in the slow cooker for the full 8 hours. This slow cooking method allows the meat to break down and absorb the spices, resulting in a melt-in-your-mouth texture. When slicing the corned beef, cut against the grain to keep the slices tender.
Suggested Side Dishes
Alternative Ingredients
corned beef brisket - Substitute with pastrami: Pastrami has a similar texture and flavor profile, making it a suitable replacement for corned beef in a Reuben sandwich.
corned beef brisket - Substitute with roast beef: Roast beef can be used as a milder alternative, though it lacks the distinct seasoning of corned beef.
rye bread - Substitute with pumpernickel bread: Pumpernickel offers a similar dense texture and robust flavor, complementing the other ingredients well.
rye bread - Substitute with sourdough bread: Sourdough provides a tangy flavor that pairs nicely with the savory elements of the sandwich.
swiss cheese - Substitute with provolone cheese: Provolone has a mild, creamy flavor that melts well, making it a good alternative to Swiss cheese.
swiss cheese - Substitute with gruyere cheese: Gruyere offers a nutty, slightly sweet flavor that can enhance the overall taste of the sandwich.
sauerkraut - Substitute with coleslaw: Coleslaw provides a crunchy texture and tangy flavor, though it is less acidic than sauerkraut.
sauerkraut - Substitute with kimchi: Kimchi adds a spicy, fermented flavor that can bring a unique twist to the sandwich.
russian dressing - Substitute with thousand island dressing: Thousand Island dressing has a similar creamy texture and sweet-tangy flavor profile.
russian dressing - Substitute with honey mustard: Honey mustard offers a sweet and tangy flavor that can complement the other ingredients well.
Other Alternative Recipes Similar to This Sandwich
How To Store / Freeze These Sandwiches
- Allow the corned beef to cool completely before storing. This helps prevent condensation, which can make the meat soggy.
- Slice the corned beef thinly and portion it into individual servings. This makes it easier to grab just what you need without defrosting the entire batch.
- Store the corned beef in airtight containers or heavy-duty freezer bags. Make sure to remove as much air as possible to prevent freezer burn.
- Label each container or bag with the date and contents. This helps you keep track of how long the corned beef has been stored.
- For the rye bread, consider storing it separately from the corned beef to maintain its texture. Wrap the bread tightly in plastic wrap and then place it in a freezer bag.
- Swiss cheese can be stored in its original packaging if unopened. If opened, wrap it tightly in plastic wrap or aluminum foil and place it in a resealable plastic bag.
- Sauerkraut can be stored in its original container if it's resealable. If not, transfer it to an airtight container.
- Russian dressing should be stored in an airtight container in the refrigerator. It can also be frozen in small portions using ice cube trays for easy use later.
- When ready to assemble the sandwiches, thaw the corned beef, rye bread, and Swiss cheese in the refrigerator overnight.
- Reheat the corned beef in a skillet over medium heat or in the microwave until warmed through.
- Toast the rye bread in a skillet with a bit of butter to bring back its crispiness before assembling the sandwiches.
- Assemble the sandwiches as per the original recipe instructions, ensuring all components are at the right temperature for the best flavor and texture.
How To Reheat Leftovers
Preheat your oven to 350°F (175°C). Wrap each sandwich in aluminum foil to keep the bread from drying out. Place the wrapped sandwiches on a baking sheet and heat for about 15-20 minutes, or until the cheese is melted and the corned beef is warmed through.
For a quicker method, use a skillet. Preheat the skillet over medium heat. Place the sandwich in the skillet and cover with a lid to help the cheese melt. Heat for about 3-4 minutes per side, or until the bread is crispy and the corned beef is hot.
If you have a microwave, place the sandwich on a microwave-safe plate. Cover it with a damp paper towel to keep the bread from becoming too tough. Microwave on medium power for 1-2 minutes, checking halfway through to ensure even heating.
For an air fryer, preheat to 350°F (175°C). Place the sandwich in the basket and heat for about 5-7 minutes, flipping halfway through, until the bread is crispy and the cheese is melted.
If you prefer a toaster oven, preheat to 350°F (175°C). Wrap the sandwich in aluminum foil and place it on the rack. Heat for about 10-15 minutes, or until the corned beef is warmed through and the cheese is melted.
Essential Tools for Making Corned Beef Reuben Sandwiches
Slow cooker: Used to cook the corned beef brisket slowly over 8 hours, ensuring it becomes tender and flavorful.
Skillet: Preheated over medium heat to grill the sandwiches until the bread is golden brown and the cheese is melted.
Knife: Essential for slicing the cooked corned beef thinly after it has cooled slightly.
Cutting board: Provides a stable surface to slice the corned beef.
Spatula: Used to flip the sandwiches in the skillet to ensure even grilling on both sides.
Measuring cup: Used to measure out 1 cup of drained sauerkraut and ½ cup of Russian dressing.
Butter knife: Used to spread butter on one side of each slice of bread.
Tongs: Handy for removing the corned beef from the slow cooker without breaking it apart.
Plate: Used to assemble the sandwiches before grilling and to serve the finished Reuben sandwiches.
How to Save Time on Making This Sandwich
Use pre-sliced corned beef: Purchase pre-sliced corned beef from the deli to skip the slow cooking step.
Pre-shredded sauerkraut: Opt for pre-shredded sauerkraut to save time on preparation.
Ready-made russian dressing: Use ready-made russian dressing instead of making your own.
Assemble ahead: Assemble the sandwiches the night before and store them in the fridge.
Use a panini press: A panini press can cook multiple sandwiches at once, saving time.

Slow Cooker Corned Beef Reuben Sandwiches
Ingredients
Main Ingredients
- 2 pounds corned beef brisket with spice packet
- 8 slices rye bread
- 8 slices Swiss cheese
- 1 cup sauerkraut drained
- ½ cup Russian dressing
Instructions
- Place corned beef brisket in slow cooker, add spice packet, and cover with water. Cook on low for 8 hours.
- Remove corned beef from slow cooker, let cool slightly, and slice thinly.
- Preheat skillet over medium heat. Butter one side of each slice of bread.
- On the unbuttered side of 4 slices, layer Swiss cheese, corned beef, sauerkraut, and Russian dressing. Top with remaining bread slices, buttered side out.
- Grill sandwiches in skillet until bread is golden brown and cheese is melted, about 3-4 minutes per side.
Nutritional Value
Keywords
Suggested Appetizers and Desserts for This Recipe
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