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Dinner · Part 2 of 3: Instructions

Slow Cooker Bratwurst in Spiced Cider with Caramelized Onions Step-by-step instructions

Slow cooker bratwurst and caramelized onions in a rich cider sauce served on a white plate.
Prep
Cook
Total
Serves
4
Includes 5 min resting

Before you start

Prepare the workspace by ensuring the slow cooker is clean and positioned near a power outlet. Slice the yellow onions into uniform, quarter-inch thick rounds to ensure they cook evenly.

Measure the cider and mustard precisely, and have the garlic pepper seasoning ready to sprinkle. Verify that the bratwurst are fresh and properly refrigerated until the exact moment of assembly to maintain optimal food safety standards throughout the preparation.

Ingredients at a glance (5)
  • 4 links raw bratwurst links
  • 2 large yellow onions, sliced into rounds
  • 1 tsp garlic pepper seasoning
  • 1 cup spiced apple cider
  • 1 tbsp dijon mustard

Instructions

Initial Assembly

  1. Assemble the ingredients
    Place the raw bratwurst links into the bottom of the slow cooker in a single layer. Scatter the sliced onions evenly over the top of the sausages to ensure they soften during the cooking process.
    Look for Arrange the sausages snugly at the bottom of the vessel.
    Tip Ensure the onions cover the sausages to lock in moisture.

The sausages are arranged in a single layer at the bottom of the pot, covered with a thick blanket of sliced onions. This layer provides the foundation for the braising process, ensuring that every piece is exposed to the aromatic vapors as the slow cooker heats up.

Seasoning and Liquid Application

  1. Season and add liquid
    Sprinkle the garlic pepper seasoning over the onion and sausage layer. In a small glass measuring cup, whisk together the spiced apple cider and the dijon mustard, then pour the mixture over the contents of the slow cooker.
    Look for The liquid should partially submerge the bottom layer of sausages.
    Tip Whisk the mustard into the cider thoroughly to create a uniform braising liquid.

The seasoning is distributed evenly, and the cider-mustard mixture is poured over the ingredients to initiate the braising. At this stage, the liquid is clear and the onions are raw, setting the stage for the slow transformation into a flavorful, aromatic sauce during the long cook time.

Slow Cooking and Finishing

  1. Slow cook and serve
    Cover the slow cooker and cook on low for 4 hours until the bratwurst reach an internal temperature of 160°F (71°C). Once cooked, remove the sausages, let them rest for 5 minutes, and serve alongside the caramelized onions.
    Look for The onions should be very soft and golden brown.
    Safe temperature 160°F (71°C) internal temperature (ground meat)
    Tip If the onions are not soft enough, continue cooking for an additional 30 minutes.

After four hours, the onions should be deeply caramelized and the sausages should be firm yet juicy.

The kitchen will be filled with a savory aroma, indicating that the flavors have successfully melded together. Check the internal temperature to confirm the meat is safe and ready to serve.

Common mistakes

A common error is overcrowding the slow cooker, which prevents the heat from circulating effectively and can result in unevenly cooked meat.

Another mistake is using high heat settings, which can cause the sausages to burst or the onions to burn before the flavors have properly melded. Always stick to the low setting for the most tender, consistent results and avoid opening the lid frequently during the process.

How to tell it’s done

The bratwurst are fully cooked when they reach an internal temperature of 160°F (71°C) when measured with a meat thermometer. The sausages should appear plump and glossy, with the onions transformed into a soft, golden-brown confit.

The liquid in the base of the cooker will have reduced slightly, thickening into a savory glaze that clings to the ingredients.

  • Ground meat: 160°F (71°C) in the thickest part

Coming up in Part 3: common questions

  • Can this recipe be made with other types of sausage?
  • Is it necessary to brown the sausages before putting them in the slow cooker?
  • How can the sauce be made thicker without a slow cooker reduction?

Also in Part 3: variations (Spicy Cider Brats, Herb-Infused Brats), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)