Slow Cooker Sausage, Peppers & Onions

Slow Cooker Sausage, Peppers & Onions: Your New Favorite Comfort Food Hack

Hey foodie friend! Clara here, whisk in hand and slow cooker humming. Raise your hand if you’ve ever stared into your fridge after a long day, willing dinner to magically appear? 🙋‍♀️ That exact moment is why this Slow Cooker Sausage, Peppers & Onions recipe is about to become your new kitchen BFF. Imagine juicy Italian sausages slow-dancing with caramelized peppers and onions in a rich marinara hug – all while you’re conquering your to-do list or binge-watching that new baking show. This isn’t just “dump dinner” territory; it’s flavor alchemy that transforms humble ingredients into something magical. The best part? Your house will smell like a cozy Italian trattoria by hour two. Whether you’re feeding hangry teens, meal-prepping like a boss, or just craving a hug in bowl form, this dish delivers. So grab your slow cooker (dust it off if needed!) – we’re making comfort food that’s secretly easy enough for a Wednesday but special enough for Sunday supper. Let’s get simmering!

My Love Affair with This Humble Hero

This recipe takes me straight back to my college apartment kitchen – the one with the wobbly table and questionable “vintage” linoleum. My roommate Sofia (hi Sof, if you’re reading this!) would blast Italian opera on rainy afternoons while we chopped peppers. We’d toss everything in her mom’s ancient crockpot, then study while garlicky aromas wrapped around us like a warm blanket. One epic finals week, we forgot to plug it in. Cue panic at 7PM! We cranked it to high, added a splash of red wine, and prayed. Miraculously, it became our best batch ever – the onions turned jammy, the sausages caramelized fiercely, and we declared it “Desperation Delight.” That happy accident taught me two things: 1) Cooking disasters often birth brilliance, and 2) Good food + great friends = instant soul therapy. Now, whenever I smell peppers sizzling, I’m 22 again in that tiny kitchen, laughing over textbooks and knowing dinner will fix everything.

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Slow Cooker Sausage, Peppers & Onions


  • Author: clarawhitmore
  • Total Time: 6–7 hrs
  • Yield: serves 6

Description

Comfort food doesn’t get much easier—or more flavorful—than this Slow Cooker Sausage, Peppers & Onions. Juicy Italian sausages are slow-simmered with sweet bell peppers, onions, and rich marinara for a hands-off, hearty meal. Optional mozzarella makes it extra melty and satisfying!

 


Ingredients

Scale

1 package (5 links) uncooked Italian sausages

2 bell peppers, sliced (red & green)

1 large onion, sliced

½ tsp garlic salt (or a mix of salt + garlic powder)

½ tsp Italian seasoning

½ tsp freshly ground black pepper

1 cup marinara or pasta sauce (Rao’s recommended)

1 tbsp olive oil

½¾ cup shredded mozzarella cheese (optional, not pre-shredded)


Instructions

Prep the base: In the bottom of a slow cooker, drizzle olive oil. Add sliced peppers and onions. Sprinkle with garlic salt, Italian seasoning, and pepper.

 

Add sausage: Place sausages on top of veggies. Pour marinara sauce evenly over everything.

 

Slow cook: Cover and cook on LOW for 6–7 hours or HIGH for 3–4 hours, until sausages are cooked through and veggies are soft.

 

Optional cheese finish: In the last 10–15 minutes, sprinkle mozzarella over the top and let melt.

 

Serve: Enjoy on its own, over cauliflower rice, or in a toasted low-carb bun.

 

  • Prep Time: 10 mins
  • Cook Time: 6 hrs (low) / 3 hrs (high)
  • Category: Dinner

Nutrition

  • Calories: ~350–400
  • Fat: 28g
  • Carbohydrates: 6g
  • Protein: 20g

Your Flavor Toolkit: Simple Ingredients, Big Impact

Why these ingredients work: Each plays a specific role in building deep, layered flavor during the slow simmer. Pro tip: Quality matters most with the sausages and marinara – they’re the flavor backbone!

  • 1 package (5 links) uncooked Italian sausages – Hot or mild! Uncooked lets them absorb sauce flavors better than pre-cooked. Chef’s swap: Use chicken or turkey sausages for lighter fare.
  • 2 bell peppers, sliced (red & green) – Red adds sweetness, green gives bright contrast. Pro hack: Throw in yellow or orange for confetti vibes!
  • 1 large onion, sliced – Yellow onions caramelize beautifully. Slice pole-to-pole for texture that holds up.
  • ½ tsp garlic salt – The slow cooker mutes flavors, so we boost umami. No garlic salt? Use ¼ tsp salt + ½ tsp garlic powder.
  • ½ tsp Italian seasoning – Our herbal secret weapon! Rub it between fingers before adding to wake up the oils.
  • ½ tsp freshly ground black pepper – Freshly cracked = brighter flavor. Don’t skip!
  • 1 cup marinara or pasta sauce – Rao’s is my gold standard for depth, but your favorite jar works. Bold move: Add 2 tbsp tomato paste for extra richness.
  • 1 tbsp olive oil – Helps veggies soften and prevents sticking. Extra virgin adds fruity notes.
  • ½–¾ cup shredded mozzarella (optional)Critical: Shred it yourself! Pre-shredded won’t melt as smoothly. Feeling fancy? Burrata or provolone work too.

Let’s Build Flavor, One Layer at a Time

Don’t rush the layering – it ensures even cooking and prevents the dreaded “mushy pepper syndrome”!

  1. Prep the base: Drizzle olive oil in your slow cooker. Add sliced peppers and onions. Sprinkle with garlic salt, Italian seasoning, and pepper. Why this order? The oil creates a barrier so veggies steam in their own juices without scorching. Toss gently with your hands – yes, get in there! (Wash after, promise.)
  2. Add sausage: Nestle sausages on top of the veggies like they’re floating in a pepper raft. Golden rule: Don’t stir! This keeps sausages from stewing in liquid. Pour marinara evenly over everything – no need to stir. Pro move: Swirl ¼ cup water in the sauce jar and drizzle it around edges.
  3. Slow cook: Cover and cook on LOW 6-7 hours or HIGH 3-4 hours. Resist peeking! Every lift adds 15-20 mins cooking time. Sausages are done when internal temp hits 160°F. Veggies should be tender but not disintegrating. Timing tip: Low and slow = more caramelized magic!
  4. Optional cheese finish: In last 10-15 minutes, sprinkle fresh mozzarella over sausages. Cover just until melted and gooey. Watch closely: If your slow cooker runs hot, prop lid open with a chopstick to prevent cheese seizing.
  5. Serve: Use tongs to grab sausages, then scoop veggies and sauce beneath. Save-the-sauce move: If liquid seems thin, remove sausages/veggies and simmer sauce uncovered on stove for 5 mins.

Serving Up the Cozy

This dish is the ultimate shape-shifter! For a deconstructed vibe, plate sausages whole over a swoosh of creamy polenta, piled high with peppers and onions. Low-carb warriors: Serve over cauliflower rice or zucchini noodles – the sauce clings beautifully. Game day hero? Pile into toasted low-carb buns with extra cheese and a sprinkle of fresh basil. My personal fave: Top with a fried egg for brunch (trust me!) with crusty bread for sauce-dipping duty. Always finish with flaky salt and cracked pepper!

Make It Your Own: 5 Flavor Twists

This recipe is a blank canvas for your cravings!

  1. Spicy Arrabbiata: Use hot sausages + spicy arrabbiata sauce + ½ tsp red pepper flakes. Top with pickled jalapeños.
  2. Mediterranean Mood: Swap Italian seasoning for oregano + thyme. Add Kalamata olives and artichokes last 30 mins. Feta > mozzarella!
  3. Plant-Powered: Substitute Beyond Meat sausages or portobello caps. Use veggie broth instead of water swirl.
  4. Creamy Tuscan: Stir ¼ cup cream cheese or coconut cream into sauce last 10 mins. Add baby spinach!
  5. Wine-Infused: Deglaze with ¼ cup red wine before adding marinara. Rosemary sprigs = chef’s kiss.

Confessions from My Crockpot Chronicles

This recipe has evolved more than my taste in kitchen aprons! Originally, I’d brown sausages first (still delicious but extra dishes – no thanks). The “no-browning” version won for sheer ease. Once, during a kitchen experiment, I added sweet potatoes – verdict: delicious but they turned the sauce alarmingly orange! Lesson learned: root veggies need less time. Funny story: My dog, Basil (yes, named after the herb), once dragged the entire slow cooker liner off the counter trying to “taste test.” Sausage-gate 2020 taught me to always use the locking lid! Now, I double the batch religiously – leftovers become stuffed peppers, pizza topping, or my famous “hangover hash” with fried potatoes.

Your Questions, Solved!

Q: Can I use pre-cooked sausages?
A: You can, but add them in the last 1-2 hours on LOW to prevent toughness. Flavor won’t penetrate as deeply though!

Q: My veggies turned to mush! Help?
A: Three culprits: 1) Overcooking – stick to max 7 hours on LOW, 2) Slicing too thin – aim for ½-inch strips, 3) Stirring during cooking – just don’t! Mushy fix? Blend it into soup.

Q: Can I freeze leftovers?
A: Absolutely! Freeze sans cheese in airtight containers for 3 months. Thaw overnight in fridge. Reheat gently on stove, adding fresh cheese when serving.

Q: Instant Pot version?
A: Yes! Sauté onions/peppers in pot 3 mins. Add everything except cheese. Pressure cook 10 mins + 10 min natural release. Quick release, then add cheese on “Keep Warm.”

Nourishment Notes (Approximate Per Serving)

Without cheese: 350 cal | 28g fat | 10g carbs (6g net) | 15g protein
With ½ cup mozzarella: 420 cal | 32g fat | 10g carbs (6g net) | 22g protein
Using turkey sausage? Subtract ~50 calories and 8g fat.

Whether you’re hustling through a busy week, feeding a hungry crew, or just craving that nostalgic, homey flavor, this Slow Cooker Sausage, Peppers & Onions delivers every time. It’s low effort, high reward, and endlessly adaptable—just the way comfort food should be. With juicy sausages, jammy peppers, and a marinara-rich base that practically cooks itself, this dish proves that you don’t need hours in the kitchen (or a sink full of dishes) to serve something that feels like a warm hug. Go ahead—double the batch, save those leftovers, and let your slow cooker be the MVP of your week. You’ve officially unlocked the easiest way to bring Italian comfort to your table, no matter the day. Mangia, friend! 🍽️💛

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