I started making brats in my slow cooker a few winters ago when grilling outside in freezing weather stopped sounding fun, and I haven’t looked back since. The first time I tried it, I honestly couldn’t believe how juicy and tender the brats turned out without me standing over a grill the whole time.

I toss everything in, let my slow cooker do the heavy lifting, and come back a couple hours later to brats that taste like they’ve been simmering all day. If you’ve been wondering how long to cook brats in a slow cooker without drying them out, I promise this method solves that problem completely. Let me walk you through exactly how I make mine.

Cooking Time

Prep Time: 10 minutes
Cooking Time: 2 hours on high (or 4 hours on low)
Total Time: 2 hours 10 minutes

Ingredients

10 raw bratwurst — go for classic pork or beer brats, and skip pre-cooked ones for the best texture
1 onion, sliced into half moons — sweetens as it cooks and forms a flavorful bed for the brats
4 cloves garlic, smashed — smashing instead of mincing releases more flavor into the broth slowly
1 cup beer of choice — a light lager works best, since bolder beers like IPA can turn bitter
2 tablespoons grainy mustard — adds tang and depth, dijon mustard works as a solid substitute
1 teaspoon caraway seeds — gives that classic German flavor, feel free to skip if you don’t have any
Salt and pepper to taste — always season your liquid before it goes over the brats

Note: this recipe serves 10.

Equipment You Need

Slow cooker — the main tool that gently cooks the brats until tender
Large skillet — for searing the brats before they go into the slow cooker
Tongs — makes flipping and transferring the brats easy and mess-free
Small mixing bowl — for combining your beer, mustard, and caraway seeds
Cutting board and knife — for slicing onions and smashing garlic cloves

How to Make a Slow Cooker Bratwurst Recipe?

This recipe really only needs a handful of simple steps, and most of the work happens hands-off in the slow cooker. Here’s exactly how I put mine together from start to finish.

Prep the Onions and Garlic

Slice your onion into half moons and smash your garlic cloves with the flat side of a knife. Layer both directly into the bottom of your slow cooker so they sit underneath the brats as everything cooks together.

Sear the Brats

Heat a little oil in a large skillet over medium-high heat and brown your brats for about one to two minutes per side. They don’t need to cook through here, you’re just building color and locking in flavor before the slow cooker takes over.

Nestle the Brats on Top

Once browned, transfer the brats directly on top of the onions and garlic already sitting in your slow cooker. This layering helps the brats soak up flavor from underneath as they continue cooking slowly.

Mix and Pour the Sauce

In a small bowl, whisk together your beer, mustard, and caraway seeds, then season with salt and pepper. Pour this mixture evenly over the brats and vegetables so everything gets coated in that savory, slightly tangy liquid.

Cook Low and Slow

Cover your slow cooker and cook on high for about two hours, or on low for closer to four hours, until the brats are fully cooked through. Once done, they’ll be tender, juicy, and ready to serve straight from the pot.

Additional Tips for Making This Recipe Better

I’ve made this recipe more times than I can count, and here’s what really makes a difference for me.

I never skip searing the brats first, since that quick step locks in so much extra juiciness.
I always use a mild lager instead of a strong beer, because bold beers can turn the sauce bitter.
I like draining my brats briefly before putting them in a bun so the bread doesn’t get soggy.
I sometimes add sauerkraut right into the slow cooker with the onions for extra tang.
I keep my slow cooker on low instead of high whenever I have the extra time, since it keeps the texture more tender.

Common Mistakes to Avoid

I skipped searing the brats once to save time, and they came out pale and missing that deep, roasted flavor.
I used a hoppy IPA instead of a lager one time, and the sauce turned out unexpectedly bitter.
I left mine on high for too long once and ended up with a slightly tougher, less juicy texture.
I forgot to season my beer mixture with salt and pepper, and the whole dish tasted flat.
I overcrowded my slow cooker with too many brats at once, which kept them from cooking evenly.

How to Serve Slow Cooker Bratwurst?

I like piling mine into toasted hoagie or brat buns with a generous spoonful of the cooked onions on top. A drizzle of extra grainy mustard and a sprinkle of fresh parsley makes the plate look a little more special without any real effort.

For a heartier spread, I’ll set out a platter with sauerkraut, pretzel bites, and a small bowl of beer cheese for dipping. If you’re in the mood to switch things up on a weeknight when the slow cooker isn’t an option, I also love making this easy stovetop bratwurst version that’s ready in about 25 minutes.

Variations

Add sliced potatoes to the slow cooker for a heartier slow cooker bratwurst and potatoes version
Skip the beer entirely and use chicken broth for slow cooker brats without beer that are still full of flavor
Layer in a can of drained sauerkraut for a classic slow cooker bratwurst and sauerkraut combination
Toss in sliced bell peppers and extra onions for brats in crockpot with peppers and onions
Combine sauerkraut and potatoes together for a full bratwurst and sauerkraut and potatoes slow cooker meal
Use water instead of broth or beer if you want a simpler brats in crockpot with water version
Add extra mustard and a splash more beer for a bolder slow cooker beer brats and sauerkraut flavor

Nutritional Information

Here’s a general breakdown per serving, though the exact numbers will vary depending on the brand of bratwurst you use.

Calories: 320 kcal
Protein: 15 g
Carbohydrates: 4 g
Fat: 26 g

Make Ahead and Storage

You can slice your onions and smash your garlic up to a day ahead of time and keep them covered in the fridge until you’re ready to cook.

Store any leftover brats in an airtight container in the refrigerator, where they’ll stay fresh for about three to four days.

For longer storage, freeze the cooked brats in a sealed freezer container for up to three months, then thaw in the fridge overnight before reheating in a skillet or the microwave.

Why You’ll Love This Recipe?

This has become one of my most-requested dinners, and here’s exactly why I think you’ll love it too.

It’s practically hands-off: Once everything is in the slow cooker, you’re free to go about your day while dinner cooks itself.
It’s perfect for a crowd: This recipe scales up easily, making it a great choice for game day or a backyard get-together.
It works all year round: No grill required, so you can enjoy that classic brat flavor even in the middle of winter.
It’s endlessly customizable: Whether you want a simple beer-and-mustard version or a loaded one with potatoes and kraut, this base recipe adapts easily.
It’s a guaranteed crowd-pleaser: Every single time I’ve made these for a party, they disappear faster than anything else on the table.

FAQs

How long do you cook brats in a slow cooker for the best texture?

I find two hours on high or about four hours on low gives the juiciest, most tender result without overcooking them.

Can I make slow cooker brats without beer?

Yes, simply swap the beer for chicken broth or even water, and you’ll still get a flavorful, tender result.

Do I really need to sear the brats first?

I highly recommend it, since that quick sear locks in juices and adds a deeper, more roasted flavor that’s worth the extra few minutes.

Can I add potatoes and sauerkraut to this recipe?

Absolutely, just layer sauerkraut and onions on the bottom, nestle the brats on top, and add potatoes for a complete one-pot meal.

How do I store and reheat leftover slow cooker bratwurst?

Keep leftovers in an airtight container in the fridge for three to four days, then reheat in a hot skillet or the microwave until warmed through.

If you love brats as much as I do, you might also want to try my beer braised bratwurst skillet version for those nights you’re craving that same flavor but want something ready in one pan.

Ash Tyrrell