Dinner · Part 2 of 3: Instructions
Slow Cooker Sausage and Caramelized Onions for an Easy Dinner Step-by-step instructions

- Prep
- Cook
- Total
- Serves
- 4
Before you start
Before starting, verify that the slow cooker is clean and dry. Ensure that the onions are fresh and free of any soft spots, as this will affect the final sweetness of the dish.
Have a meat thermometer ready to confirm the internal temperature of the sausages, as this is the only way to ensure the meat is safely cooked through while maintaining its texture.
Ingredients at a glance (2)
- 1 1/2 lb Italian sausage links
- 3 large yellow onions, thinly sliced
Instructions
Preparation
- Prepare the ingredientsThinly slice the yellow onions using a sharp knife on a stable cutting board. Ensure the slices are uniform to promote even cooking during the long slow process.Look for Onions should be sliced into consistent strips.Tip Using a mandoline can speed up the slicing process if available.
The onions should be sliced into uniform, thin strips that will cook down evenly. Ensure the work surface is clean and the onions are prepared before you plug in the slow cooker to keep the process organized and efficient.
Slow Cooking
- Start the slow cookerPlace the sliced onions at the bottom of the slow cooker. Arrange the sausage links on top of the onion bed. Cover with the lid and set to low heat for four hours.Look for The onions should be nestled beneath the sausages.Tip Resist the urge to lift the lid, as this releases essential heat and moisture.
During the long cooking phase, the kitchen will begin to smell savory and sweet. The onions should be softening and the sausages should be releasing their juices, creating a flavorful environment that allows the ingredients to meld.
Finishing
- Finish and serveCheck that the sausages have reached an internal temperature of 160°F (71°C) using a meat thermometer. Once cooked, remove the links and serve with the caramelized onions.Look for Sausages should be browned, glistening, and firm to the touch.Safe temperature 160°F (71°C) internal temperature (ground meat)Tip Let the sausages rest for five minutes before serving to ensure juiciness.
At the end of the process, the sausages should be fully cooked, and the onions should be rich, sweet, and golden. If the onions seem too wet, they can be stirred to incorporate the remaining juices before serving.
Common mistakes
A common mistake is cutting the onions too thick, which prevents them from softening completely during the cooking time. Another issue is overcrowding the slow cooker, which can lead to uneven cooking.
Avoid adding extra liquids like water or broth, as the sausages and onions contain more than enough moisture to create a perfect, flavorful sauce on their own without thinning the results.
How to tell it’s done
The sausages are done when they are browned, glistening, and firm to the touch.
Most importantly, use an instant-read thermometer inserted into the center of the thickest link to ensure they reach a safe internal temperature of 160°F (71°C).
The onions should be very soft, translucent, and have taken on a deep golden or light brown color, indicating they have fully caramelized.
- Ground meat: 160°F (71°C) in the thickest part
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)