Slow Cooker Sausages, Peppers and Onions

Published June 4, 2024

Slow Cooker Sausages, Peppers and Onions
Ryan Liebe for The New York Times. Food Stylist: Maggie Ruggiero.
Total Time
About 6 hours
Prep Time
15 minutes
Cook Time
4 to 6 hours
Rating
5(109)
Notes
Read community notes

The sure-fire combination of sausages, peppers and onions is ready-when-you-are when you make them in the slow cooker. (Once the sausages are cooked through and the peppers and onions are tender, they can hold on “warm” for up to 2 hours.) Searing the sausages in a skillet is the only cooking you’ll have to do, but it’s an important step that fortifies the sauce with the sausage’s brawny, spiced juices. The sweet peppers and onions will tangle in the light, tangy tomato sauce. (Save extra sauce for tomorrow’s pasta, or if you want a thicker sauce, strain and reduce in a saucepan on the stovetop.) Pile everything into a sub — perhaps with some mozzarella broiled on top — or over pasta, roasted potatoes or gnocchi.

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Ingredients

Yield:6 servings
  • 3bell peppers (any colors), sliced ¼-inch thick
  • 1large yellow onion, halved and sliced ¼-inch thick
  • 1teaspoon garlic powder
  • 1teaspoon dried oregano
  • ½teaspoon crushed red pepper (optional)
  • 1Parmesan rind (optional)
  • Salt and black pepper
  • 1tablespoon extra-virgin olive oil
  • 1½ to 2pounds sweet or hot Italian sausage
  • One (14-ounce) can crushed tomatoes
  • Torn basil leaves, for serving (optional)
Ingredient Substitution Guide
Nutritional analysis per serving (6 servings)

474 calories; 36 grams fat; 13 grams saturated fat; 0 grams trans fat; 17 grams monounsaturated fat; 6 grams polyunsaturated fat; 16 grams carbohydrates; 3 grams dietary fiber; 8 grams sugars; 22 grams protein; 928 milligrams sodium

Note: The information shown is Edamam’s estimate based on available ingredients and preparation. It should not be considered a substitute for a professional nutritionist’s advice.

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Preparation

  1. Step 1

    In a 5- to 8-quart slow cooker, add the peppers, onion, garlic powder, oregano and red pepper and Parmesan rind (if using). Season with salt and pepper and toss to combine. Set aside.

  2. Step 2

    Heat the oil in a large skillet over medium. Add the sausage and cook, turning occasionally, until browned all over, 8 to 10 minutes. Transfer to the slow cooker.

  3. Step 3

    With the heat off under the skillet, pour in the crushed tomatoes and scrape up any browned bits from the skillet. Scrape the tomatoes into the slow cooker. Toss gently to combine. Cover and cook on low until the vegetables are tender and the sausage is cooked through, 4 to 6 hours. Season to taste with salt and pepper. Top with the basil, if desired.

Ratings

5 out of 5
109 user ratings
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Cooking Notes

To adjust recipe to use an Instant Pot, assuming Instant Pot duo (other models will be similar) 1. Press the “Slow Cook” key 2. Set cook time to 4 hrs by pressing the "+" or "-" key 3. Select desired cooking mode with the “Adjust” key, pressing to set to “Normal”, which is similar to temp of conventional slow cooker set to low. After 4 hours, check if the sausage is cooked through (recipe time is 4 to 6 hours). If not cooked through, repeat steps 1-3, choosing amount of time to finish in step 2

Agree recipe can be made on stove top or even on low temp in oven, but : Stove top requires monitoring, oven heats up the kitchen (a problem in the summer). Crock pot requires little supervision and the kitchen stays cool. But..... whatever works.

I prefer cooking sausage and peppers and onions in the air fryer. Toss the sliced onions and peppers in oil and place in the air fryer. Place sausage on top. Cook 20 minutes flipping the sausage half way through. Place your rolls on top to crisp for a few minutes. So delicious and easy!

Sausage and peppers is one of our favorite meals. I usually make it on the stove top because that’s the way I do it. But I love the idea of making it in a crockpot. Essential to brown the sausage first. Then it takes care of itself and fills the house with that spicy, tangy aroma. Will serve over linguine the first night then make subs with some mozz on them for another night.

Thanks for this yummy slow cooker recipe. I added about a third to a half cup of orzo so that the sauce would thicken.

Surprisingly delicious despite crockpot bias. I’ve made numerous versions including oven roasted with potatoes, braised, barbecued and with ingredients including wine and Marsala (see Giada). The sauce is tasty - doubled up on oregano, garlic powder and red pepper. Serving with supermarket Los Angeles bollillos and especially missing Natale’s rolls (New Jersey native). Aroma was spectacular during cooking. Enough leftover sauce to freeze for a future pasta dish.

I cooked this last night and it was delicious. I made a few substitutions and found a nifty "hack' of sorts. My local market has a "fajita" pack in its produce section with ready made cut up bell peppers and onions I used one of those. I also de-glazed the skillet with a splash of red wine before I tossed in a can of whole San Maranzano tomatoes which I lightly crushed, I didn't have any basil, so I tossed in a sprig of rosemary and served it over toasted sourdough bread

Less peppers, use a Vidalia onion, use slightly sautéed fresh garlic 3-4 cloves minced. I use my oven set at a low temp using a Dutch oven. More tomatoes, two cans Rienzi. Set adjust oven to 250-300 degrees until 1/2 to 3/4 sliced sausage are tender. Serve with sauce, peppers and onions on Italian sesame seed rolls (Natale’s in Summit NJ). Top with fresh mozzarella then broil slightly before serving.

Good and easy meal. Added a third of a cup of Orso per another commentor. That did help to thicken it.

Why sear the sausages? Let the slow cooker do it all.

Followed directions exactly, but after 6 hours on low in my slow-cooker, the veggies all but disappeared. The resulting sausage and "gravy" was very tasty, but the peppers and onions dissolved into the tomatoes.

Great results for minimal effort, plus slow-cooker = no stove = cool kitchen. I used 4 hot Italian chicken sausages from Whole Foods. In addition to garlic powder, oregano, and red chili flakes, added 1 tsp garlic granules, 1 tsp Italian Seasoning, 1 tsp black pepper and 1 tsp sea salt. Instant pot has sauté and slow cooker functions (one-pot meal). After browning sausages, deglazed with a splash of vermouth. Set and forget on low for 6 hours. Served with warm bread, leftovers with pasta.

I tried this to avoid using the stovetop during this heatwave. It didn’t really save any time nor cut down on the heat. It was very watery and I had to boil off the extra liquid at the end. I would have done better to just sauté then cook everything for 20-30 minutes. Not the best use of a slow cooker.

Just made this today, the only change I made is I could only find little sweet peppers right now instead of bell peppers so I added the equivalent. This was so good! The sausage gets so tender being slow braised for hours and the peppers and onions were so flavorful. I used spicy italian sausage and it really makes for a spicy meal, I served over bowtie pasta. Delicious!

Agree adding garlic. Also include cubanal peppers, aka Italian frying peppers. They add their own pepper flavor.

I've taken to roasting the sausages in my Breville toaster oven. They brown well and it saves me a lot of clean up for a frying pan I don't need to use.

Don't need to cook sausage 8-10 min just a quick browning 1-2 all around. Actually it works without browning too. I always cook my sausage this way in a slow cooker. No monitoring it while you do other things. I cook 6-8 hours

Cooking pork sausages on low heat even for a long time doesn't sound safe. Any sausages should be fried or roasted to 165 degrees and then added to the slow cooker. It is safer and browning first improves the taste of the sausages and the dish. It doesn't matter how long the sausages are cooked on low - if they don't reach a safe temperature they're not safe to eat.

Delicious and easy to make- I put over some roasted little potatoes that I made in the air fryer. Will definitely add to the rotation.

Yay for five star crockpot recipes!!! This was perfect please make more :)

My wife and I tried it last week. Delicious but what surprised us the most was the tenderness of the sausages; they were a lot more tender than when we broil them. It's a definite keeper.

A hit, with vegan Italian sausages.

I wouldn't cook vegetables in slow cooker for 6 hrs

I poured off all but 2-3 tablespoons of oil after cooking the sausages on the stovetop, and then added the tomatoes to loosen the brown bits. Must have poured off at least half-cup of oil, and the sauce still came out very juicy. Highly recommended for those watching their cholesterol levels.

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