The Best EASY Reuben Casserole Recipe (Prepped In 10 Minutes)

This reuben casserole recipe has everything you love about a reuben sandwich but in casserole form. It combines pastrami with rye bread, swiss cheese, sauerkraut, pickles, and tangy thousand island dressing to make an irresistible casserole dish that the entire family will love. In addition to tasting incredible, this casserole is also so, so easy to put together. In fact, just 10 minutes of prep time are all you need to make it!

The Best Reuben Casserole

If you love the flavor of Reubens and the simplicity of casseroles, then you're going to fall head over heels for this Reuben casserole recipe.

It takes all the flavors of a perfect Reuben sandwich and turns it into a layered casserole baked with a creamy thousand island dressing. Seriously, every bite is rich with savory, cheesy, creamy, and zesty flavors.

After you've made this casserole recipe once, you'll be looking for excuses to make it again and again, it's just that good.

And, as I mentioned a second ago, this Reuben casserole isn't just easy to eat it's also super easy to make. Just a few simple steps are all you'll need to follow to make it. Honestly, the hardest part of the whole process is just waiting for it to bake in the oven.

By the way, if you're looking for some tasty sides to serve with this corned beef casserole, you really can't go wrong by making these McDonalds french fries, these honey-glazed carrots, or this cornbread. The carrots are a fam favorite, especially with our 2-year-old.

Ingredients

Another reason to love this reuben casserole is that it's made with simple ingredients. In fact, if you love reuben sandwiches as much as I do, then you probably have most - if not all - of the ingredients you'll need to make it in your kitchen already!

Anyway, here's everything you'll need to make this Reuben casserole:

• 6-7 slices of rye bread
• 1 lb. Thinly sliced corned beef
• 12 oz. sauerkraut
• 4 cups shredded Swiss cheese, divided
• 1 ½ tsp coriander, caraway, or fennel seeds
• 1 cup chopped dill pickles
• 1 cup of full-fat milk
• 3 eggs
• ¼ cup thousand island dressing (or Russian dressing)
• ¼ cup mustard

Not too shabby, eh?! It's got pretty much everything that you'd need to make a sandwich and a few extra to make it a casserole.

By the way, if you're craving a sandwich later this week for dinner, you have to make this grinder sandwich or chopped cheese sandwich. You really can't go wrong makin' either!

Ingredient Substitutions And Suggestions

Now, I always make this reuben casserole recipe with the ingredients above - because I think it turns out best that way - but you can easily make a few swaps to customize this recipe and make it your own.

With that said, I'll go over some of my favorites below. 

Experiment With Different Meat

This recipe calls for deli corned beef to make a classic reuben casserole, but it can also be made with either pastrami or roast beef as well. Honestly, you can even use canned corned beef to make it with too.

Switch Up The Bread Crumb Topping

Another swap you could make using rye crackers in place of the rye bread crumbs. If you do go the cracker route, I recommend tossing them in some melted butter first, so they don't burn in the oven.

How To Make A Reuben Casserole

As I mentioned earlier, this recipe is not only delicious, but it is also super easy to make.

All you have to do is layer your casserole dish with some rye bread cubes, corned beef, sauerkraut, swiss cheese, and pickles. Then, just make your savory tangy egg mixture, pour it over everything in the dish, add your homemade bread crumbs and bake!

I know that may sound like a lot of steps, but I promise it's really simple when you make it. Honestly, it should take you only about 10 minutes to prep.

Anyway, let's stop wasting time and get into the recipe!

Step 1: Prep Work

First things first, begin by preheating the oven to 350°F (180°C) and spraying an 11x7-inch baking dish with non-stick cooking spray.

Then, cut 4-5 slices of rye bread into cubes and place the bread cubes into your prepared casserole dish. Next, take the remaining rye bread and add it to a food processor - or high-power blender - pulse the bread pieces until you have coarse crumbs and set them aside.

Step 2: Assemble The Casserole

Once you have your bread cubes layered in the casserole dish, top them with half of the corned beef (or other deli meat). Then, layer the sauerkraut and dill pickles on top, followed by half of the coriander seeds and half of the swiss cheese.

Next, repeat this process, gently pushing the top of the casserole to flatten it after you add the second layer.

Step 3: Make The Egg Mixture

Now that the base of the casserole is good to go, you can make the filling mixture.

To do that, take out a large bowl and add the eggs, milk, thousand island dressing, and mustard to it. Then, give all of these ingredients a good mix until they fully combine.

Once mixed, pour the egg mixture evenly over the casserole and top it with the homemade bread crumbs from earlier.

Step 4: Bake The Casserole

So, now that your corned beef casserole is fully assembled, cover it with aluminum foil and bake it for 45 minutes.

Then, allow the casserole to cool for 5 minutes. Finally, slice it, serve it, and enjoy it! 

How To Store Reuben Casserole

This recipe for Reuben casserole makes 6 large servings, so it's perfect for a big family dinner. And, odds are, you'll probably end up with some leftovers.

So, if you do, you can store the leftovers in an airtight container in the fridge for up to 3-4 days. Now, that is if you get the corned beef fresh from the grocery store that day since it'll only last for up to 4 days.

Alternatively, if you want your leftovers to last even longer, you can store them in the freezer for up to 3 months.

How To Reheat Reuben Casserole

Once you're ready to enjoy this cheesy Reuben casserole again, it's definitely best reheated.

So, if you're heating multiple servings of this casserole at once, I definitely recommend transferring everything back to the casserole dish you cooked it in and warming it up in the oven for about 10-12 minutes at 350°F. Just heat it until the creamy sauce is hot and the cheese has remelted.

On the other hand, if you just wanted to reheat a single serving, then you can reheat it in the microwave. I usually heat my leftover casserole in 30-second intervals until it's fully reheated - about 2 minutes should do the trick.

Oh, and if you're reheating the frozen casserole, you'll want add a substantial amount of time to both of these reheating methods.

Wrapping It Up

Well, that's how to make a reuben casserole!

This reuben casserole is just as good - if not better - as your favorite deli shop reuben sandwich. It's got all of those same delicious flavors, but it's baked into a rich and super satisfying casserole that I just know you're going to love.

Anyway, I hope you enjoyed this recipe as much as my family and friends do. Honestly, the Irish side of the family can't get enough of it, especially on St. Patrick's day.

As always, if you give this recipe a try, then be sure to leave a comment below and let us know how it went!

More Casserole Recipes

If you're looking for some more delicious casseroles to make next, we have a ton on the blog that you can try next!

Here are some reader favorites:

• Pork chop casserole
• Sloppy Joe casserole
• Buffalo chicken casserole
• Pierogi casserole
• John Wayne casserole
• French onion chicken casserole

Also, don’t forget to follow us along on Instagram, TikTok, and YouTube. We post new recipes on them every single day.

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