These 5-ingredient slow cooker Memorial Day brats are built for busy hosts who still want that classic Midwestern cookout flavor. Instead of hovering over a grill all afternoon, you’ll toss raw bratwurst links into the slow cooker with beer, onions, and a touch of mustard and brown sugar, then let low, gentle heat do the work. Brats simmered this way are a staple in many parts of the Midwest, where they’re often finished on a hot grill or under the broiler for snap and color. This version keeps the process simple and hands-off, freeing you up to enjoy your guests while the slow cooker quietly turns out a crowd-pleasing main dish.
Serve the brats tucked into soft brat buns or sturdy hot dog rolls, spooning some of the sweet-savory onions over the top. Classic cookout sides like potato salad, coleslaw, baked beans, or grilled corn on the cob all work beautifully. A crisp green salad or cucumber salad adds freshness, while kettle chips keep things unfussy. Pair with a cold lager or pilsner if you’re serving beer, or offer iced tea and lemonade for a family-friendly spread.
5-Ingredient Slow Cooker Memorial Day BratsServings: 8
Ingredients
2 pounds raw bratwurst links (about 8 standard brats)
2 large yellow onions, thinly sliced
2 cups beer (lager or pilsner)
2 tablespoons Dijon or stone-ground mustard
2 tablespoons packed brown sugar
Directions
Place the raw bratwurst links in a single layer on the bottom of a 5- to 6-quart slow cooker. It’s fine if a few overlap slightly, but try to keep them mostly in one layer so they cook evenly.
Scatter the sliced onions evenly over and around the brats, letting some fall down between the links so they’ll cook in the juices.
In a medium bowl or large measuring cup, whisk together the beer, mustard, and brown sugar until the sugar is mostly dissolved and the mixture looks uniform.
Pour the beer mixture over the brats and onions, making sure the links are mostly submerged. Gently press the onions down into the liquid if needed.
Cover the slow cooker with the lid. Cook on LOW for 6 to 7 hours, or on HIGH for 3 to 4 hours, until the brats are fully cooked through and the onions are very soft. The internal temperature of the brats should reach at least 160°F (71°C).
Once cooked, you can serve the brats straight from the slow cooker with the onions and juices, or, for a classic cookout finish, transfer the brats to a preheated grill or a foil-lined baking sheet and brown them over medium-high heat for 3 to 5 minutes, turning once, just until they develop a bit of color and snap.
Serve the brats in buns with a spoonful of the slow-cooked onions and some of the cooking juices, adding your favorite condiments like extra mustard, sauerkraut, or pickles.
Variations & Tips
For a lighter flavor, substitute low-sodium chicken broth or a mix of broth and apple cider for the beer; this is a good option if you’re serving kids or avoiding alcohol (the alcohol in beer mostly cooks off, but some traces can remain). If you prefer a tangier profile, swap half of the beer for apple cider vinegar and reduce the brown sugar to 1 tablespoon to keep the balance. You can also add 1 teaspoon of caraway seeds or fennel seeds with the onions for a more traditional German-style brat flavor. For a bit of heat, whisk 1 to 2 teaspoons of prepared horseradish or hot sauce into the beer mixture. If you’d like peppers in the mix, add 1 to 2 sliced bell peppers on top of the onions before cooking. Food safety tips: Always start with fully raw, refrigerated bratwurst links, and keep them chilled until you’re ready to load the slow cooker. Don’t preheat the slow cooker empty; add the brats and liquid before turning it on. Cook on LOW or HIGH as directed, and verify doneness with an instant-read thermometer inserted into the center of a brat; it should read at least 160°F (71°C). Do not leave cooked brats at room temperature for more than 2 hours (1 hour if it’s hot outside at your cookout). If holding them on the “warm” setting in the slow cooker, ensure the food stays above 140°F (60°C) to minimize bacterial growth. Refrigerate leftovers promptly in shallow containers and use within 3 to 4 days, reheating until steaming hot before serving.
