Indulge in the classic flavors of a Reuben sandwich with this easy-to-make slow cooker corned beef version. Perfect for a hearty lunch or dinner, this recipe combines tender corned beef, melted Swiss cheese, tangy sauerkraut, and creamy Russian dressing between slices of buttery rye bread.
If you're not familiar with corned beef brisket, it's a salt-cured beef that needs to be cooked slowly to become tender. Russian dressing might not be a staple in every kitchen, but it's a creamy, tangy sauce that pairs perfectly with the other ingredients. Rye bread is another key component, offering a distinct flavor that complements the Reuben sandwich.

Ingredients for Slow Cooker Corned Beef Reuben Sandwiches
Corned beef brisket: A salt-cured beef cut that becomes tender when cooked slowly.
Rye bread: A type of bread with a distinct flavor that pairs well with the other ingredients.
Swiss cheese: A mild, nutty cheese that melts beautifully.
Sauerkraut: Fermented cabbage that adds a tangy crunch.
Russian dressing: A creamy, tangy sauce that ties all the flavors together.
Butter: Softened butter is used to toast the bread to a golden brown.
Technique Tip for Making Reuben Sandwiches
When preparing the corned beef brisket in the slow cooker, consider adding a few aromatics like bay leaves, peppercorns, and garlic cloves to the water. This will infuse the meat with additional layers of flavor, making your Reuben sandwiches even more delicious.
Suggested Side Dishes
Alternative Ingredients
corned beef brisket - Substitute with pastrami: Pastrami has a similar flavor profile and texture, making it a great alternative for corned beef in a Reuben sandwich.
rye bread - Substitute with pumpernickel bread: Pumpernickel has a rich, robust flavor that complements the other ingredients in the sandwich well.
swiss cheese - Substitute with provolone cheese: Provolone melts well and has a mild flavor that pairs nicely with the other ingredients.
sauerkraut - Substitute with coleslaw: Coleslaw provides a similar crunch and tangy flavor, adding a fresh twist to the sandwich.
russian dressing - Substitute with thousand island dressing: Thousand island dressing has a similar creamy and tangy profile, making it a suitable replacement.
softened butter - Substitute with olive oil: Olive oil can be used to toast the bread, providing a slightly different but still delicious flavor.
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How to Store or Freeze Your Reuben Sandwiches
Allow the corned beef to cool completely before storing. This helps prevent condensation, which can make the bread soggy.
For short-term storage, place the sliced corned beef in an airtight container and refrigerate. It will stay fresh for up to 3-4 days.
If you have leftover assembled sandwiches, wrap each one tightly in plastic wrap or aluminum foil. Store them in the refrigerator for up to 2 days. Reheat in a skillet or oven to maintain the crispiness of the rye bread.
For freezing, individually wrap each sandwich in plastic wrap, then place them in a freezer-safe bag or container. This double-layer protection helps prevent freezer burn.
Label the freezer bags with the date to keep track of their freshness. Frozen sandwiches can be stored for up to 2 months.
When ready to eat, thaw the sandwiches in the refrigerator overnight. Reheat in a skillet over medium heat until the swiss cheese is melted and the bread is golden brown.
Alternatively, you can reheat the sandwiches directly from frozen. Preheat your oven to 350°F (175°C), place the wrapped sandwiches on a baking sheet, and heat for about 20-25 minutes, or until warmed through.
For the best texture, avoid microwaving the sandwiches, as this can make the bread chewy and the sauerkraut soggy.
If storing the russian dressing separately, keep it in a small airtight container in the refrigerator. It will last for up to a week. Add it to the sandwiches just before serving to maintain its fresh flavor.
To save time, you can pre-slice the corned beef brisket and portion it into individual servings before freezing. This makes it easier to assemble sandwiches quickly when needed.
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. Heat the skillet over medium heat and place the sandwich in the skillet. Cover with a lid to help the cheese melt evenly. Cook for about 3-4 minutes per side, or until the bread is crispy and the corned beef is heated through.
If you have a toaster oven, preheat it to 350°F (175°C). Place the sandwich on a baking tray and heat for about 10-15 minutes. This method is great for maintaining the crispiness of the bread.
For a microwave option, place the sandwich on a microwave-safe plate. Cover with a damp paper towel to prevent the bread from drying out. Microwave on medium power for about 1-2 minutes, or until the cheese is melted and the corned beef is warmed through. Note that this method may result in a less crispy bread.
If you have an air fryer, preheat it to 350°F (175°C). Place the sandwich in the air fryer basket and heat for about 5-7 minutes. This method will keep the bread crispy while ensuring the cheese is melted and the corned beef is hot.
Essential Tools for Making Reuben Sandwiches
Slow cooker: Used to cook the corned beef brisket slowly over 8 hours, ensuring it becomes tender and flavorful.
Knife: Essential for slicing the cooked corned beef brisket thinly after it has rested.
Cutting board: Provides a stable surface for slicing the corned beef brisket.
Skillet: Used to grill the sandwiches, ensuring the bread becomes golden brown and the cheese melts properly.
Spatula: Handy for flipping the sandwiches in the skillet to ensure even cooking on both sides.
Measuring cup: Used to measure out the sauerkraut and Russian dressing accurately.
Butter knife: Useful for spreading the softened butter on the rye bread slices.
Tongs: Can be used to handle the hot corned beef slices and to place them onto the bread without burning your fingers.
How to Save Time on Making Reuben Sandwiches
Pre-slice the corned beef: Slice the corned beef brisket the night before and store it in the fridge to save time during assembly.
Use pre-made Russian dressing: Buy Russian dressing from the store instead of making it from scratch.
Pre-butter the bread: Butter the rye bread slices in advance and store them in an airtight container.
Preheat the skillet: Ensure your skillet is preheated to save cooking time.
Use a food processor: Quickly shred the sauerkraut using a food processor if it's not already shredded.

Slow Cooker Corned Beef Reuben Sandwiches
Ingredients
Main Ingredients
- 2 pounds corned beef brisket
- 8 slices rye bread
- 8 slices Swiss cheese
- 1 cup sauerkraut
- ½ cup Russian dressing
- 2 tablespoons butter softened
Instructions
- Place corned beef brisket in a slow cooker. Cover with water and cook on low for 8 hours.
- Once cooked, remove the brisket from the slow cooker and let it rest for a few minutes. Slice thinly.
- Butter one side of each slice of rye bread. Place 4 slices, buttered side down, on a skillet over medium heat.
- Layer each slice with Swiss cheese, corned beef, sauerkraut, and Russian dressing. Top with the remaining bread slices, buttered side up.
- Cook until the bread is golden brown and the cheese is melted, about 3-4 minutes per side.
- Serve hot and enjoy!
Nutritional Value
Keywords
Suggested Appetizers and Desserts for This Recipe
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