Bratwurst, Sauerkraut, and Potato Casserole Recipe: Smoky Sausage Layers With Tangy Crunch

This bratwurst, sauerkraut, and potato casserole recipe delivers hearty, smoky comfort in one satisfying dish—where tender bratwurst, tangy sauerkraut, and creamy potatoes create layers of flavor that disappear faster than you can say "seconds."

The secret lies in browning the bratwurst first to develop deep, caramelized edges that infuse the entire casserole with rich, savory notes. I perfected this recipe during a chilly autumn weekend when I needed a dish that could feed a crowd without requiring multiple pots or pans.

What makes this casserole special is its balance of textures and flavors—crispy bratwurst slices, tender potatoes, and the bright tang of sauerkraut cut through the richness while keeping every bite interesting.

The dish comes together in just 30 minutes of prep before baking at 375°F for about 45 minutes, making it ideal for busy weeknights or meal prep.

The potatoes absorb the smoky juices from the bratwurst, while the sauerkraut adds a refreshing acidity that keeps the dish from feeling too heavy.

By the time it emerges from the oven, your casserole will be golden on top with bubbling edges, where the bratwurst slices peek through the creamy potato layer. The aroma alone—smoky, herby, and slightly sweet—will have everyone gathering around the table.

This is the kind of dish that feels like a hug on a plate, perfect for family dinners, game days, or whenever you need a comforting meal that doesn’t skimp on flavor.

Serve it with a dollop of mustard or a crisp green salad to balance the richness, and don’t forget the warm dinner rolls. The leftovers reheat beautifully, making this casserole a practical choice for feeding a crowd or prepping ahead.

Let’s get cooking—this recipe is about to become a regular in your rotation.

Ingredients for bratwurst sauerkraut and potato casserole

Six hearty ingredients transform into a smoky, tangy casserole that feeds a crowd with minimal effort.

The bratwurst makes this dish—look for high-quality, all-beef sausages at Costco or your butcher. Johnsonville or Applegate brands are reliable, but any good-quality bratwurst works. Slice them into rounds before browning (don’t skip this step—it’s what gives the casserole that deep, caramelized flavor). The potatoes? Yukon Golds are ideal—they hold their shape while absorbing the smoky juices. If you’ve got leftover roasted potatoes, toss those in for extra flavor. The sauerkraut should be jarred, not canned—it’s tangier and less processed. Drain it well, but don’t rinse unless it’s too sour for your taste.

No heavy cream? Full-fat Greek yogurt works in a pinch (though it’s tangier). Swap the sour cream for crème fraîche if you’re feeling fancy. Short on thyme? Dried thyme at one-third the amount gets you close, but fresh is worth it here—it brightens up the dish. The mustard adds depth, but if you’re avoiding it, a splash of apple cider vinegar in the broth brings similar tang. For the cheese topping, Gruyère melts beautifully and adds a nutty flavor, but sharp cheddar is a solid backup. The beef broth can be subbed with chicken broth, but the bratwurst’s smokiness will still shine through.

This casserole reheats like a dream—even better the next day as the flavors meld. Store leftovers covered in the fridge for up to 5 days, or freeze portions for up to 3 months. I like to portion it into individual containers so I can grab and reheat for quick lunches. The cheese topping gets crispy when reheated, so add a splash of milk or broth to keep it creamy. Serve with crusty bread to soak up the smoky juices—trust me, you’ll want it.

Step-by-step instructions for bratwurst, sauerkraut, and potato casserole

Layering flavors and textures makes this dish shine—let's build it right.

Start by peeling and thinly slicing the 3 lb yukon gold potatoes into ¼-inch rounds—uniform thickness ensures even cooking. As you slice, soak the potatoes in cold water for 10 minutes to remove excess starch, then drain and pat dry with a kitchen towel. This step prevents a gummy texture in your casserole.

While the potatoes soak, slice the 1.5 lb bratwurst sausages into ½-inch rounds. I like to cut them on the bias for a slightly irregular shape that holds up better during baking. Keep the sliced sausages on a plate until ready to use—don't cook them yet.

In a 9x13-inch baking dish, spread ½ cup sauerkraut (drained and rinsed if too sour) evenly across the bottom. This first layer adds tangy depth without overpowering. Next, arrange half of the sliced potatoes in a single layer, slightly overlapping them like shingles. Sprinkle with ½ tsp salt and ¼ tsp black pepper to season.

Add half of the sliced bratwurst sausages on top of the potatoes, then pour ½ cup beef broth over everything. This liquid helps the bottom layer cook gently as the casserole bakes. Repeat the layering process with the remaining ½ cup sauerkraut, half of the potatoes, and half of the bratwurst sausages, finishing with another ½ cup beef broth.

In a medium bowl, whisk together the 1 cup heavy cream, ½ cup sour cream, 1 tbsp dijon mustard, 1 tbsp fresh thyme, 1 tsp salt, and ¼ tsp black pepper. This mixture will create a luscious, tangy sauce that ties everything together. Stir in the 1 cup shredded cheese until fully combined—you want a smooth, pourable consistency.

Pour the creamy mixture evenly over the top of the casserole, spreading it with a spatula to ensure full coverage. The cheese should melt into a golden, bubbly crust while keeping the potatoes tender underneath. For extra browning, sprinkle the 2 tbsp butter over the top—it adds richness and helps create a crispy finish.

Cover the casserole tightly with aluminum foil and bake at 375°F for 45 minutes. This initial covered bake allows the potatoes to soften and the flavors to meld without drying out. After 45 minutes, remove the foil and bake for another 15-20 minutes until the top is golden brown and bubbly.

Here's the thing—don't overbake. The casserole should be heated through with a slightly crispy top, but the potatoes still tender when pierced with a fork. If the edges brown too quickly, tent loosely with foil for the last 5 minutes of baking. Let it rest for 10 minutes before serving—this allows the juices to redistribute and makes slicing easier.

Garnish with the thinly sliced onion and minced garlic cloves, lightly toasting them in a separate pan for 2-3 minutes until fragrant. Spoon these over the top just before serving for a fresh, aromatic finish. The onions should add a subtle sweetness that contrasts beautifully with the tangy sauerkraut and smoky bratwurst.

Slice into 6 equal portions and serve warm. Each bite delivers creamy potatoes, savory bratwurst, and that perfect tang from the sauerkraut—all held together by the rich, cheesy sauce. Leftovers keep well in the fridge for 3-4 days, and they actually taste even better reheated the next day.

Dietary considerations for this recipe

Gluten-Free Adaptations

This casserole is naturally gluten-free if you use certified gluten-free bratwurst—brands like Hillshire Farm Gluten-Free or Applegate Naturals work perfectly. Just double-check labels, as some sausages contain hidden gluten from fillers.

For the sauerkraut, opt for gluten-free sauerkraut (like Bubbies or Reid's) or rinse regular sauerkraut thoroughly to remove any potential cross-contamination from processing equipment. 🌱

Dairy-Free Swaps

To make this dish dairy-free, replace the heavy cream and sour cream with full-fat coconut milk (for richness) and dairy-free yogurt (like Silk Almond Yogurt). For the cheese topping, use nutritional yeast or dairy-free shredded cheddar (such as Violife).

The flavor won’t be identical, but it still delivers that creamy, tangy profile. The potatoes will absorb the coconut milk beautifully, adding a subtle sweetness.

Lower-Carb Options

For a lower-carb version, replace half of the potatoes with cauliflower florets (about 2 cups)—they’ll soften and soak up the smoky flavors just like potatoes. You can also use zucchini slices for a lighter texture.

Reduce the beef broth to ½ cup total to balance the moisture, and adjust the baking time by 5-10 minutes to ensure everything cooks through. The bratwurst and sauerkraut will still be the star, but with fewer carbs.

Vegetarian Substitutions

Swap the bratwurst for smoked tofu or plant-based sausages (like Beyond Meat Bratwurst), which hold up well to baking. For extra smokiness, marinate the tofu in liquid smoke (½ tsp) and smoked paprika (1 tsp) before slicing.

The sauerkraut and potatoes will still shine, but the dish takes on a lighter, more herbaceous flavor profile. Garnish with extra fresh thyme to keep it vibrant and tangy.

Allergen-Friendly Tips

If you’re avoiding mustard, replace the Dijon mustard with apple cider vinegar (1 tbsp) or lemon juice (1 tbsp) in the creamy topping. For nut allergies, ensure all ingredients (like shredded cheese or broth) are nut-free—some brands process in facilities with nuts.

Always check labels, especially for sauerkraut and sausages, as cross-contamination can happen. A quick call to the manufacturer clarifies any doubts.

Protein Alternatives

For a chicken version, use sliced chicken sausage (like Johnsonville Chicken Apple) instead of bratwurst. The flavor is milder but still pairs well with the tangy sauerkraut. If you prefer beef, try beef kielbasa—it’s smokier and holds up beautifully in the casserole.

For a seafood twist, swap in smoked salmon (about 12 oz) and reduce the baking time by 10 minutes to avoid overcooking.

Frequently asked questions