There is something incredibly comforting about walking into the kitchen and being greeted by the rich aroma of bratwurst slowly simmering in beer, onions, and peppers. This recipe takes a Midwestern classic and adapts it for the slow cooker, giving you all the smoky, savory flavor of beer brats without the need to stand over a grill. Whether you are preparing for game day, a family dinner, or simply craving a hearty and easy-to-make meal, this recipe delivers satisfying results every time.
The Tradition of Beer Brats
Beer brats are a staple of Wisconsin and the broader Midwest, often enjoyed at summer cookouts, tailgate parties, and neighborhood gatherings. Traditionally, bratwursts are simmered in beer and onions, then grilled for a smoky char. This slow cooker version captures that same depth of flavor but offers a more hands-off approach, making it perfect for busy weeknights or when you want a stress-free meal that practically cooks itself.
By layering fresh vegetables, bratwursts, spices, and beer, the slow cooker allows everything to gently braise together, creating tender sausages and perfectly softened peppers and onions. The result is a dish that feels both rustic and indulgent, while still being easy enough for everyday cooking.
Ingredients
6 fresh bratwurst sausages
2 large sweet onions, sliced into half-moons
3 bell peppers (any mix of red, yellow, or green), sliced
3 cloves garlic, minced
1 bottle (12 ounces) of German lager or another light beer
1 tablespoon brown sugar
1 teaspoon kosher salt
1 teaspoon black pepper
1 teaspoon paprika
½ teaspoon caraway seeds (optional, for a traditional German touch)
¼ teaspoon crushed red pepper flakes (optional, for heat)
For Serving
Toasted hoagie rolls or pretzel buns
Whole grain mustard or spicy brown mustard
Sauerkraut (optional)
Additional caramelized onions (optional)
Fresh parsley, chopped for garnish
Instructions
Prepare the slow cooker base
Place the sliced onions and bell peppers into the bottom of a 6-quart slow cooker. These vegetables will form a flavorful bed for the sausages and absorb the cooking juices.
Season and layer the bratwursts
In a small bowl, combine the salt, pepper, paprika, caraway seeds, and crushed red pepper flakes. Lay the bratwursts on top of the vegetables, then sprinkle the seasoning mixture evenly over them. Add the brown sugar and minced garlic.
Add the beer
Slowly pour the beer into the slow cooker, being careful to pour it around the edges rather than directly over the bratwursts. This helps keep the seasoning in place.
Cook
Cover and cook on low for 6–8 hours, or on high for 3–4 hours. The bratwursts should reach an internal temperature of 165°F. By the end of the cooking time, the sausages will be tender and infused with flavor, while the peppers and onions will be soft and slightly sweet.
Serve
Allow the bratwursts to rest for 5 minutes before serving. Place each brat into a toasted roll, top with the peppers and onions, and finish with mustard, sauerkraut, or any of your favorite condiments. Sprinkle with fresh parsley for a bright finish.
Tips for Success
Choosing the beer: A German lager is the most traditional choice, but you can experiment with pale ales for a bolder flavor or a dark beer for richer notes. Avoid overly hoppy beers, as they can add bitterness.
Adding more vegetables: While onions and peppers are classic, you can include mushrooms or cabbage for extra depth.
Crisping the brats: If you prefer a charred exterior, you can brown the sausages in a skillet before adding them to the slow cooker, or quickly sear them under the broiler after they have cooked.
Make it a full meal: Pair the bratwursts with potato salad, roasted potatoes, or a simple green salad to create a complete dinner.
Variations
Cheesy Beer Brats: Top the finished bratwursts with shredded cheddar or Swiss cheese before serving.
Spicy Beer Brats: Use hot Italian sausages in place of bratwursts and increase the crushed red pepper.
Low-Carb Option: Skip the buns and serve the sausages in a bowl with peppers, onions, and sauerkraut.
Storing and Reheating
Leftovers keep well and taste even better the next day as the flavors continue to develop. Store bratwursts and vegetables in an airtight container in the refrigerator for up to 3 days. Reheat gently in a skillet with a splash of broth or beer to prevent the sausages from drying out. For longer storage, freeze cooked brats and vegetables (without buns) for up to 2 months.
Nutrition (per serving, without bun)
Calories: ~365
Protein: 17g
Carbohydrates: 12g
Fat: 27g
This Slow Cooker Beer Bratwurst with Onions and Peppers is more than just a recipe—it’s a taste of Midwestern tradition made easy for the modern kitchen. It combines the nostalgic flavors of smoky beer brats with the convenience of slow cooking, making it perfect for everything from a weeknight dinner to a festive gathering. Once you try this method, you may find yourself turning to it again and again for a hearty, crowd-pleasing meal.