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Dinner · Part 2 of 3: Instructions

Slow Cooker Italian Sausage and Sweet Pepper Subs Step-by-step instructions

Finished slow cooker Italian sausage and pepper filling served on a white plate.
Prep
Cook
Total
Serves
4
Includes 5 min resting

Before you start

Before beginning, ensure your slow cooker is clean and the power cord is accessible. Wash and slice your bell peppers and onions into uniform strips, which will help them cook at the same rate.

Ensure the Italian sausage links are fully thawed if you were storing them in the freezer. Have your marinara sauce and dressing mix packet ready to go, as the assembly process is very quick once you start.

Ingredients at a glance (4)
  • 1 lb sweet Italian sausage links
  • 3 cups sliced bell peppers and onions
  • 1 packet Italian dressing mix
  • 24 oz marinara sauce

Instructions

Layering the base

  1. Layering the slow cooker
    Place the sweet Italian sausage links into the base of the slow cooker. Arrange the sliced bell peppers and onions evenly over the top of the sausage links to ensure they cook in the juices.
    Look for sausages are at the bottom
    Tip Ensure the sausages are fully thawed before placing them in the cooker to guarantee even cooking.

The sausages should be arranged in a single layer at the bottom of the cooker, with the peppers and onions covering them completely. This placement ensures the meat gets the benefit of the direct heat while the vegetables steam in the aromatic juices released during the cooking process.

Seasoning and saucing

  1. Adding seasonings and sauce
    Sprinkle the Italian dressing mix evenly over the peppers and onions. Pour the entire jar of marinara sauce over the top, ensuring that all ingredients are well-coated and submerged in the sauce.
    Look for sauce is poured over everything
    Tip Distribute the dressing mix uniformly to avoid concentrated pockets of seasoning.

The dressing mix should be lightly dusted over the vegetables, followed by the marinara sauce, which should be poured to cover everything. At this stage, ensure the sauce is evenly distributed so that the flavors can meld properly as the slow cooker begins to build heat.

Cooking and serving

  1. Cooking and finishing
    Cover the slow cooker and cook on high for 4 hours until the sausages reach an internal temperature of 160°F (71°C). Once finished, remove the sausages, let them rest for 5 minutes, then serve over toasted rolls with the pepper and sauce mixture.
    Look for sauce is bubbling and sausage is cooked through
    Safe temperature 160°F (71°C) internal temperature (ground meat)
    Tip Use a meat thermometer to ensure the sausages reach the safe internal temperature.

The final stage involves monitoring the internal temperature of the sausages to ensure they are safe to eat. Once the thermometer reads 160°F (71°C), the dish is ready.

The kitchen should smell savory and fragrant, and the sauce should look glossy and well-incorporated with the cooked peppers.

Common mistakes

A common mistake is overcrowding the slow cooker or failing to ensure the sausages are evenly distributed, which can lead to uneven cooking.

Avoid lifting the lid frequently during the cooking process, as each time you open it, the temperature drops, which adds significant time to the overall cooking cycle. Additionally, ensure the dressing mix is evenly sprinkled to avoid uneven seasoning distribution throughout the sauce.

How to tell it’s done

The dish is finished when the sausages are fully cooked through, reaching an internal temperature of 160°F (71°C). You can check this by inserting a meat thermometer into the center of the thickest link.

The vegetables should be tender and easily pierced with a fork, and the sauce should have thickened slightly from the rendered juices of the sausage.

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

Coming up in Part 3: common questions

  • Can this be made in a smaller slow cooker?
  • Why is it important to let the meat rest?
  • Can frozen sausages be used?

Also in Part 3: variations (Cheesy Sausage Subs, Spicy Sausage and Peppers), 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)