Baked Reuben Casserole with Thousand Island Custard Tips, FAQ & printable recipe

Tips for success

To add an extra layer of flavor, consider adding a teaspoon of caraway seeds to the dressing mixture. This enhances the traditional Reuben profile and adds a pleasant, aromatic crunch to the dish. If you prefer a sharper taste, you can mix a small amount of spicy brown mustard into the Thousand Island dressing before pouring it over the bread, providing a subtle heat that cuts through the richness of the cheese.

Serving the casserole with a side of extra pickles or a light green salad can provide a refreshing contrast to the hearty, savory nature of the dish. The acidity from the pickles complements the tangy sauerkraut perfectly, while a crisp salad adds a necessary textural variety.

If you want to elevate the presentation, garnish the top with a sprinkle of fresh chopped parsley or chives just before serving to add a pop of color and freshness.

Variations

• Turkey Reuben Casserole: Substitute the corned beef with sliced or chopped deli-style roasted turkey breast for a lighter, slightly milder variation that still delivers the classic Reuben flavor profile.
• Spicy Reuben Casserole: Add a tablespoon of chopped pickled jalapeños or a dash of hot sauce to the dressing mixture to provide a spicy kick that complements the tangy sauerkraut and rich cheese.

Storage and make-ahead

Fridge

Store in an airtight container for up to 3 days in the refrigerator.

Freezer

Freezing is not recommended as the bread texture may degrade significantly upon thawing and reheating.

Reheat

Reheat portions in a preheated oven at 325°F (165°C) until warm, or microwave briefly until heated throughout.

Store any leftover casserole in an airtight container in the refrigerator for up to three days. Ensure the dish has cooled completely at room temperature for no more than two hours before placing it in the fridge to maintain food safety.

When storing, try to keep the pieces intact to prevent them from drying out, and place a sheet of parchment paper over the top if the container is not airtight to help retain moisture.

You can assemble the casserole up to four hours before baking, but keep it covered in the refrigerator until you are ready to put it in the oven. If you assemble it too far in advance, the rye bread may become too soft and lose its texture. For the best results, prepare the dressing and the base separately, and combine them right before baking to ensure the bread maintains the perfect balance between soft and firm.

Serving ideas

Serve the casserole warm, directly from the baking dish, using a wide spatula to lift individual portions. The texture is best when the dressing is still slightly soft but firm enough to hold its shape on the plate.

Because this is a hearty, filling dish, smaller portions are often sufficient, especially when served alongside lighter accompaniments. Ensure everyone has a generous portion of the cheesy, golden top, which is the most prized part of the casserole.

Consider setting out additional Thousand Island dressing on the side for those who prefer a little extra tang with their meal. The warm, savory nature of the Reuben flavors makes this dish a great option for casual gatherings or a cozy family dinner.

Encourage guests to enjoy it while it is fresh from the oven, as the contrast between the bubbling cheese and the tender, dressing-soaked bread is at its peak immediately after the short resting period.

Frequently asked questions

Recipe card

Baked Reuben Casserole with Thousand Island Custard

Prep 15 minCook 40 minRest 5 minTotal 1 hServes 6

Ingredients

• 6 cups rye bread, cubed
• 1 lb corned beef, chopped
• 2 cups sauerkraut, drained
• 2 cups Swiss cheese, shredded
• 1 cup Thousand Island dressing

Instructions

1. Preheat your oven to 350°F (175°C). In a greased 9x13 inch baking dish, spread the cubed rye bread evenly. Top the bread with the chopped corned beef and the drained sauerkraut, distributing them thoroughly to ensure every serving gets a bit of everything.
2. In a medium mixing bowl, whisk the Thousand Island dressing until smooth. Pour this dressing evenly over the bread, meat, and sauerkraut mixture, ensuring all pieces are moistened.
3. Sprinkle the shredded Swiss cheese over the top of the casserole. Place the dish into the preheated oven and bake for 35 to 40 minutes, or until the cheese is golden brown and bubbling, and the corned beef is heated through to 145°F (63°C). Allow to rest for at least 3 minutes before serving.

Contains: gluten, fish, milk

Estimated nutrition per serving

Calories

420

Protein

20 g

Carbohydrates

32 g

Fat

23 g

Fiber

3 g

Sugar

5 g

Sodium

900 mg

Automatic estimate from the ingredient list, not laboratory-verified.