Step 6: Layer the Casserole

Transfer approximately half of the ham-and-sauerkraut mixture into the prepared baking dish.

Spread it into an even layer.

Sprinkle about half of the Swiss and mozzarella cheeses over the top.

Add the remaining sauerkraut mixture and spread it evenly.

Finish with the remaining Swiss and mozzarella, followed by the shredded cheddar.

This layering creates pockets of melted cheese throughout the casserole rather than leaving all the cheese on the surface.

Step 7: Bake

Place the casserole in the preheated oven.

Bake uncovered for approximately 25–30 minutes.

You’ll know it is ready when the edges are bubbling and the cheese on top is completely melted with golden-brown spots.

For an especially browned top, you can switch the oven to broil for the final 1–2 minutes, watching it carefully so the cheese doesn’t burn.

Step 8: Let It Rest

Remove the casserole from the oven and allow it to rest for approximately 10 minutes before serving.

This resting period gives the creamy sauce time to settle and makes the casserole easier to portion.

Scatter fresh chopped parsley over the top if desired.

Tips for the Best Cheesy Sauerkraut and Ham Bake

Don’t skip draining the sauerkraut

Excess sauerkraut liquid is one of the easiest ways to end up with a watery casserole. Drain it thoroughly before adding it to the sauce.

Use flavorful cheese

Swiss cheese is a natural match for ham and sauerkraut, while mozzarella provides a wonderfully stretchy texture. Sharp cheddar adds extra depth and a slightly stronger flavor.

You can experiment with Gruyère or Monterey Jack if you prefer.

Don’t oversalt

There are several naturally salty ingredients in this recipe. Taste the mixture before reaching for the salt shaker.

Give it time to rest

Although it may be tempting to serve it immediately, those few minutes of resting help the casserole hold together when spooned onto plates.

Use leftover ham

This recipe is an excellent way to transform leftover baked or roasted ham into something new. Cut it into small, bite-sized cubes so every serving gets a good amount.

Easy Variations

Add Potatoes

For a heartier meal, add approximately 2 cups of cooked diced potatoes to the ham and sauerkraut mixture.

The potatoes absorb some of the creamy sauce and make the casserole particularly filling.

Add Apples

For a sweet-and-savory contrast, add one small peeled apple, diced into tiny pieces. A slightly tart variety works especially well with the sauerkraut.

Make It Extra Creamy

For an even richer casserole, replace part of the milk with additional sour cream or a small amount of cream.

Keep in mind that the cheese already adds plenty of richness, so a little goes a long way.

Add Mushrooms

Sauté sliced mushrooms along with the onions before making the sauce. Their earthy flavor complements the ham beautifully.

What to Serve With It

Because this casserole is already rich and flavorful, simple sides work best.

Try serving it with:

• A crisp green salad
• Steamed green beans
• Roasted carrots
• Fresh cucumber salad
• Crusty bread
• Simple roasted vegetables

A light, fresh side helps balance the richness of the cheesy casserole.

Storing and Reheating

Allow leftovers to cool and refrigerate them in a covered container.

The casserole generally keeps well in the refrigerator for 3–4 days.

To reheat, place a portion in an oven-safe dish and warm it at 350°F (175°C) until heated through. For a smaller portion, a microwave can also work, although the cheese topping will be softer.

If the casserole seems slightly dry after refrigeration, adding a small spoonful of milk or sour cream before reheating can help restore some creaminess.

Final Thoughts

Cheesy Sauerkraut and Ham Bake is a great example of how a handful of humble ingredients can become a satisfying comfort-food dinner. The tangy sauerkraut keeps the creamy cheese sauce from feeling too heavy, while the ham adds savory depth and makes the dish substantial enough for a family meal.

The recipe is also wonderfully adaptable. You can add potatoes for extra heartiness, mushrooms for earthy flavor, or apples for a subtle sweet contrast. Whether you’re working with leftover ham or simply craving a warm casserole, this bake is an easy and flavorful way to bring something different to the dinner table.