Recipe

Skillet Brats and Onions

Crisp-edged brats finished in beer, topped with jammy onions and a punchy mustard sauce.

By Matt Campbell

•

4.8

A cast iron skillet on a home stove holding browned bratwurst links nestled into golden onions, with a small splash of beer simmering in the pan under warm kitchen light

Brats are one of those foods that feel like a party even when it is just you, a Tuesday, and a slightly questionable level of hunger. The trick is getting two textures without overthinking it: a browned, snappy outside and a juicy inside that does not taste like it was cooked out of fear.

This is my go-to one-skillet method. We sear the brats for color, then do a quick beer (or broth) steam to finish them gently. Meanwhile, onions turn sweet and jammy in the same pan, picking up all those browned bits. Toss it in a bun, serve it over mashed potatoes, or chop it into a grain bowl. It is low drama, high reward.

Raw bratwurst links, a yellow onion, garlic, whole grain mustard, a bottle of beer, butter, and buns arranged on a clean kitchen counter with natural light

Why It Works

Crisp edges, juicy centers: Searing builds flavor fast, then a short steam finishes the brats without drying them out.
Onions that taste like you tried harder than you did: They soften in the brat drippings, then get a quick buttery gloss at the end.
Flexible: Use beer, broth, apple cider, nonalcoholic beer, or even water in a pinch. Works with pork, beef, turkey, or chicken brats.
One pan: Less cleanup, more time to stand at the stove “testing” bites for quality control.

Pairs Well With

Storage Tips

Refrigerate: Store brats and onions together in an airtight container for up to 4 days.

Reheat (best): Warm in a skillet over medium-low with a splash of water or broth, covered, until hot. Uncover at the end to re-crisp the casing.

Microwave (fast): Slice the brats first so they heat evenly, then microwave with onions in 30-second bursts.

Freeze: Freeze cooled brats and onions in a freezer bag for up to 2 months. Thaw overnight in the fridge before reheating.

Scaling note: Do not crowd the pan. If you are doubling the recipe, sear in batches or use two skillets so the brats brown instead of steam.

Common Questions

Do I have to boil brats in beer first?

Nope. A full beer-boil can wash out flavor if you go too hard. This method does a short, covered simmer after browning, which keeps them juicy and still tastes like brat, not beige sausage.

What beer is best for brats?

Something you would actually drink. A lager, pilsner, or wheat beer is perfect. Avoid super bitter IPAs if you are sensitive to bitterness, since the reduced liquid can lean sharp. Nonalcoholic beer works too.

How do I know brats are done?

A thermometer is the only dependable way. Check the center of a brat: aim for 160°F for pork or beef brats and 165°F for chicken or turkey brats. If you do not have a thermometer, you can slice one to spot-check, but do not rely on “juices run clear.” Instead, make sure the center is steaming hot all the way through and no longer looks raw.

Can I make this without beer?

Yes. Swap in chicken broth, apple cider, or even water. If you use water, add a squeeze of lemon or a teaspoon of vinegar at the end to wake everything up.

Why did my brats split?

Usually the heat was too high or the steam simmer was too aggressive. Keep the covered simmer at a gentle bubble, and avoid stabbing the brats with a fork while cooking.

What if my brats are pre-cooked?

Then you are mostly just heating them through and chasing that good browning. Sear as written, then do a shorter covered simmer, about 3 to 5 minutes, or until hot in the center. You can still do the onions and mustardy pan sauce exactly the same way.

Matt Campbell

I have always had a huge passion for the culinary arts, people, working as a team, and so on. I wanted to pursue my love for cooking initially at Virginia Commonwealth University with a culinary arts degree; however, I instead decided to apply myself and acquire more practical skills. My end goal is to eventually open my own restaurant or similar establishment.

Kitchen Essentials

12-inch skillet (cast iron or stainless steel)
Tongs
Lid for the skillet (or a sheet pan to cover)
Cutting board and knife
Instant-read thermometer (recommended)

I used to think brats were strictly a grill thing, like they came with a membership card to summer. Then I started cooking more for real life, where the weather does what it wants and I still want dinner to taste like something. The skillet version won me over because it is basically the same vibe: browned, juicy, messy in the best way. Plus, onions cooked in brat drippings are the kind of kitchen math that always adds up.

Skillet Brats and Onions

(4.8 Reviews)

Prep Time 10 minutes

Cook Time 20 minutes

Total Time 30 minutes

Servings 4

Ingredients

4 bratwurst links (about 1 to 1 1/4 pounds total)
1 large yellow onion, thinly sliced
2 cloves garlic, minced
1 tablespoon neutral oil (canola, avocado, or vegetable)
2 tablespoons unsalted butter, divided
3/4 cup beer (lager or pilsner) or chicken broth
1 tablespoon whole grain mustard
1 tablespoon Dijon mustard
1 teaspoon apple cider vinegar (optional but bright)
1/2 teaspoon kosher salt, plus more to taste
Freshly ground black pepper
4 buns or rolls, split
Optional toppings: classic sauerkraut, extra mustard, pickles, jalapeños, shredded cabbage, or a swipe of mayo

Thinly sliced yellow onions and minced garlic on a wooden cutting board beside a chef's knife on a tidy kitchen counter

Instructions

Prep your station. Slice the onion, mince the garlic, and set your beer or broth within reach. This cooks fast once the pan is hot.
Sear the brats. Heat a 12-inch skillet over medium-high heat. Add oil, then add brats. Cook, turning every 1 to 2 minutes, until they are nicely browned all over, about 6 to 8 minutes total.
Add onions. Reduce heat to medium. Push brats to one side of the pan. Add onions to the empty side, then add 1 tablespoon butter and a pinch of salt. Cook 3 to 4 minutes, stirring, until they start to soften and pick up color.
Garlic, then steam. Add garlic and cook 30 seconds, just until fragrant. Pour in the beer or broth. You want a shallow simmer in the bottom of the pan, not brats fully submerged. Cover and simmer gently for 8 to 12 minutes, turning brats once halfway through, until brats reach a safe internal temp (160°F pork or beef, 165°F poultry). Very thick brats may need the full time.
Uncover and reduce. Remove the lid. Let the liquid bubble and reduce for 2 to 3 minutes so the onions go glossy and the brats bring back some snap in the casing.
Make it saucy. Turn heat to low. Stir whole grain mustard and Dijon into the onions and pan juices. Add vinegar (if using). Taste and adjust with salt and lots of black pepper. Swirl in the remaining 1 tablespoon butter for extra shine.
Toast buns (optional but recommended). If you have room, toast the cut sides of buns in the skillet for 30 to 60 seconds. If not, toast them in a toaster.
Assemble. Nestle each brat in a bun, pile on onions and that mustardy pan sauce. Add sauerkraut or pickles if you want some extra crunch and tang. Serve immediately.