Slow cooker sausage and peppers brings together juicy Italian sausage, tender bell peppers, garlic, and rich marinara sauce in one easy dinner. It's full of bold Italian flavors and simple, everyday ingredients that slowly cook into something warm and comforting.

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The backstory.
This is one of those dinners that came together on a day when I needed something simple that I knew would work. It's become a go-to around here when I want something warm, filling, and easy to pull together at the end of the day.
It's a must make.
Slow cooker sausage and peppers is one of those dinners you end up coming back to again and again because it's simple, filling, and always hits the spot.
- It's a true dump and go dinner. Everything goes into the slow cooker and you're done - no babysitting required.
- Big Italian flavors with simple ingredients. Marinara sauce, garlic, and Italian seasoning do all the heavy lifting here.
- Super versatile. Serve it over pasta or rice, on a hoagie, or however you like it.
- Perfect for busy nights. It's the kind of weeknight dinner that works even when your schedule doesn't.
Let's talk flavor and texture.
You've got juicy Italian sausage soaking up rich marinara sauce, softened bell peppers that turn perfectly tender, and onions that melt right into the mix. The garlic and Italian seasoning bring everything together with that classic, cozy flavor. Every bite is saucy, savory, and just a little bit sweet from the peppers - it's especially good with a sprinkle of parmesan or melted mozzarella on top.
What you'll need.
Italian-style crockpot sausage and peppers keeps things simple with just a handful of ingredients.
- Italian sausages: The star of the dish - use mild, sweet or hot depending on your preference.
- Onion: Adds a little sweetness and depth as it cooks down.
- Bell peppers: Any color works here and gives that classic sausage peppers and onion crockpot feel. Yellow, red, and orange are sweeter and add a nice flavor.
- Garlic: Brings in that bold, savory flavor.
- Italian seasoning: Ties everything together with those classic Italian flavors.
- Marinara sauce: The base that keeps everything juicy and flavorful.
- Salt and pepper: Just enough to balance everything out.
- Optional garnish: Extra marinara, parmesan, mozzarella, or fresh herbs if you've got them on hand.
For exact ingredient quantities, please see the recipe card below!
How to make crockpot Italian sausage and peppers.
Here's an overview on how to make this recipe. See the recipe card below for complete instructions. Enjoy!
- Layer sliced onions in the bottom of your slow cooker.
- Add the sausages on top, then pile in the bell peppers.
- Sprinkle in garlic, Italian seasoning, salt, and pepper.
- Pour marinara sauce over everything and spread it out.
- Cover and cook on low until the sausages are cooked through and everything is tender.
Make it your way.
Crockpot Italian sausage and peppers leaves plenty of room to mix things up and make it your own.
- Swap in spicy sausage if you want a little heat.
- Add mushrooms or zucchini for extra veggies.
- Use diced tomatoes instead of marinara sauce for a lighter feel.
- Sprinkle mozzarella on top at the end and let it melt for a cheesy finish.
- Turn it Cajun-style with Cajun seasoning and tomatoes for a fun twist.
If sausage dinners are already on repeat at your house, these are a few more that always come through when you need something easy and filling. Slow Cooker Sausage and Potatoes is simple and hearty with that classic meat-and-potatoes comfort. Crock Pot Stuffing with Sausage brings those cozy, savory flavors that feel right at home during the holidays or alongside a weeknight roast. Crock Pot Chili with Beef and Sausage is bold, rich, and perfect when you want something a little more filling with big flavor.
How to serve it.
Slow cooker sausage and peppers is one of those meals you can serve a dozen different ways.
- Spoon it over pasta with Italian sausage and peppers for a classic dinner.
- Pile it on a hoagie roll for an easy sandwich night.
- Serve it over rice or mashed potatoes to soak up all that sauce.
- Add a sprinkle of parmesan or mozzarella and a fresh garnish to finish it off.
- Wondering what to serve with Italian sausage and peppers? A simple salad or roasted veggies keeps it balanced.
Kori's tips.
- Let the sausages sit on top of the onions - it helps prevent sticking and adds flavor.
- Slice peppers a little thicker so they hold their texture after cooking.
- Shortcut alert - use pre-sliced peppers and onions to make it even more hands-off.
- Add extra marinara at the end if you like it saucier, especially if serving over pasta.
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FAQ's
Store leftovers in an airtight container in the fridge for up to 3 to 4 days.
Yes, this freezes well. Let it cool completely, then freeze in portions for up to 2 months.
Reheat in the microwave or on the stovetop until warmed through. Add a splash of marinara sauce if it needs a little extra moisture.
Yes! You can put raw sausages in a slow cooker. In fact, slow cooking them results in very tender, perfectly moist sausages. Add in half a cup of broth or a favorite sauce to give them a little moisture while cooking.
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📖 The recipe.

Crock Pot Italian Sausage and Peppers
Equipment
Ingredients
- 1 (19-ounce) package Italian sausages
- 1 cup onion (sliced)
- 4 bell peppers, any color
- 2 teaspoons garlic
- 2 teaspoons Italian Seasoning
- 1 (16-ounce) jar marinara sauce
- ½ teaspoon each salt and pepper
- Optional: Extra marinara sauce and grated parmesan or mozzarella as a garnish.
Instructions
- Spray slow cooker with nonstick spray.
- Place onions on the bottom of the pot followed by the sausages and then the peppers. Add garlic, Italian seasoning, salt, and pepper. Top with 1-½ cups of marinara sauce and spread over sausages and vegetables.
- Cover and cook on low for 4 to 5 hours or until sausages are done, and vegetables are tender.
- Adjust seasoning if needed. Serve and enjoy.
Notes
- Don't miss all of our helpful hints, substitution ideas, cooking tips, and other delicious recipes that can be found in our post. Check it out!
- VARIATIONS: Use mild or hot sausages. Make it cajun and substitute cajun seasoning and diced tomatoes.
- SERVING SUGGESTIONS: Serve it in a hoagie roll, over rice, pasta, or mashed potatoes. Top with extra marinara and mozzarella or parmesan cheese and garnish with basil.
Nutrition
© 2025 Slow Cooked Eats
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