Keto Crockpot Sausage and Peppers – A Low-Carb Classic

If you love hearty, no-fuss dinners with big flavor, this Keto Crockpot Sausage and Peppers will quickly become a favorite. It’s the kind of set-it-and-forget-it meal that makes your kitchen smell amazing and your evening stress-free. Juicy sausage, tender peppers, and a rich tomato base come together with almost no effort.

It’s perfect for busy weeknights, meal prep, or feeding a crowd. Serve it on its own, over cauliflower rice, or in lettuce wraps for a satisfying, low-carb meal.

What Makes This Recipe So Good

• Hands-off cooking: The slow cooker does the work, so you can get on with your day.
• Big, bold flavor: Italian sausage, peppers, onions, and garlic build a savory, slightly sweet base without added sugars.
• Low-carb and keto-friendly: No pasta or bread needed—just real, whole ingredients that fit your macros.
• Versatile: Enjoy it bowl-style, in lettuce wraps, or over riced cauliflower or sautéed cabbage.
• Meal prep friendly: Keeps well, reheats beautifully, and tastes even better the next day.

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Ingredients

• 2 pounds Italian sausage links (mild, hot, or a mix; look for sugar-free)
• 3 bell peppers (any colors), sliced into 1/2-inch strips
• 1 large yellow onion, sliced
• 3 cloves garlic, minced
• 1 (14.5-ounce) can diced tomatoes, no sugar added
• 1/2 cup low-sugar marinara or crushed tomatoes (optional for saucier results)
• 2 tablespoons olive oil
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• 1/2 teaspoon crushed red pepper flakes (optional)
• 1 teaspoon kosher salt, plus more to taste
• 1/2 teaspoon black pepper
• Fresh parsley or basil, chopped, for garnish

Step-by-Step Instructions

1. Brown the sausage (recommended): Heat a skillet over medium-high heat and add 1 tablespoon olive oil. Sear the sausage links 2–3 minutes per side until nicely browned. This step adds deep flavor and helps the sausage hold its shape. If you’re short on time, you can skip this and add the sausages straight to the slow cooker.
2. Layer the vegetables: Add sliced peppers and onions to the crockpot. Drizzle with the remaining olive oil and sprinkle with salt and pepper. Scatter the minced garlic.
3. Add tomatoes and seasonings: Pour in the diced tomatoes and marinara or crushed tomatoes, if using. Add oregano, basil, and red pepper flakes. Stir the vegetables and sauce together to distribute the seasonings.
4. Nestle in the sausages: Place the browned sausage links on top of the pepper and onion mixture. Spoon a little sauce over them.
5. Cook low and slow: Cover and cook on Low for 5–6 hours or on High for 2.5–3.5 hours, until peppers are tender and sausages are cooked through.
6. Adjust seasoning: Taste the sauce and add more salt, pepper, or red pepper flakes as needed. If you prefer a thicker sauce, remove the lid and cook on High for 20–30 minutes to reduce slightly.
7. Serve: Slice the sausages if desired. Spoon into bowls with plenty of peppers and sauce. Garnish with chopped parsley or basil. Serve as is, over cauliflower rice, or tucked into crisp lettuce wraps.

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Storage Instructions

• Refrigerator: Store leftovers in an airtight container for up to 4 days.
• Freezer: Cool completely, then freeze in meal-size portions for up to 3 months. Thaw overnight in the fridge.
• Reheating: Warm gently on the stovetop over medium-low heat or in the microwave in 60–90 second bursts, stirring in between. Add a splash of broth if needed to loosen the sauce.

Benefits of This Recipe

• Keto- and low-carb-friendly: Keeps carbs low without sacrificing comfort or flavor.
• High in protein and satisfying fats: Helps you stay full and satisfied longer.
• Minimal prep and clean-up: One slow cooker and a skillet if you brown the sausage.
• Customizable: Works with different sausages, peppers, and herbs so you can use what you have.
• Great for batch cooking: Doubles easily and reheats like a dream.

Pitfalls to Watch Out For

• Hidden sugars in sausage or sauce: Read labels. Choose sugar-free Italian sausage and no-sugar-added canned tomatoes or marinara to keep carbs down.
• Overcooked peppers: Cooking too long on High can make peppers mushy. If you like them with more bite, add half the peppers in the last hour.
• Watery sauce: Some peppers and tomatoes release extra liquid. Thicken by cooking uncovered for 20–30 minutes, or stir in a tablespoon of tomato paste.
• Under-seasoning: Slow cookers can mute flavors. Taste and adjust salt, pepper, and herbs at the end.
• Sausage splitting: Prick sausages lightly before browning to reduce splitting, or slice them after cooking for a cleaner look.

Recipe Variations

• Spicy Arrabbiata Style: Use hot Italian sausage, add extra red pepper flakes, and add a tablespoon of tomato paste for a punchy sauce.
• Chicken Sausage: Swap in chicken Italian sausage for a lighter option. Reduce cook time by 30 minutes to avoid drying out.
• Creamy Tuscan Twist: Stir in 1/4 cup heavy cream and a handful of spinach during the last 10 minutes for a silky finish.
• Garlic and Herb: Add 1 teaspoon each of dried thyme and rosemary, and finish with a squeeze of lemon to brighten the sauce.
• Mushroom Boost: Add 8 ounces of sliced mushrooms with the peppers for extra umami and volume, with minimal carbs.
• Sheet Pan Shortcut: No crockpot?Roast sausages, peppers, and onions on a sheet pan at 425°F (220°C) for 25–30 minutes, tossing once. Warm with marinara in a skillet to finish.

FAQs

Can I use frozen peppers and onions?

Yes. Frozen pepper and onion blends work well and save prep time. Add them directly to the crockpot—no need to thaw—but expect a little more liquid. Reduce the sauce at the end if needed.

Do I have to brown the sausage first?

No, but it adds flavor and better texture. If you skip browning, increase the seasoning slightly and consider adding a tablespoon of olive oil for richness.

What’s the best sausage for keto?

Look for Italian sausage with 0–1 gram carbs per link and no added sugar or fillers like corn syrup.

Check labels carefully; different brands vary a lot.

How can I make this recipe dairy-free?

It’s naturally dairy-free as written. Just avoid adding cream or cheese at the end. If you want richness, finish with a drizzle of olive oil.

How should I serve this to non-keto eaters?

Offer options: toasted hoagie rolls, buttered noodles, or steamed rice. The base recipe stays the same, so everyone gets what they like.

Can I cook this on the stovetop instead?

Yes. Brown sausages, then simmer everything in a large pot over low heat for 30–40 minutes, stirring occasionally, until peppers are tender and the sauce thickens.

What sides go well with this?

Great pairings include cauliflower rice, zucchini noodles, roasted broccoli, sautéed kale, or a simple green salad with olive oil and vinegar.

How do I keep the peppers from getting too soft?

Cook on Low, and add half the peppers in the final hour. Also, avoid lifting the lid too often, which can extend cooking time and soften vegetables further.

Read More Recipes:

• Keto Slow Cooker Tuscan Chicken
• Keto Crockpot Chicken Alfredo
• Keto Slow Cooker Pulled Pork
• Easy Keto Zucchini Bread
• 5-Ingredient Easy Rhubarb Compote

Wrapping Up

Keto Crockpot Sausage and Peppers is reliable, flavorful, and easy to tailor to your taste.

With just a few wholesome ingredients and very little hands-on time, you get a comforting meal that fits your low-carb lifestyle. Keep a batch in the fridge for quick lunches or pair it with veggies for a weeknight dinner that never gets old. Simple ingredients, slow-cooked goodness, and big flavor—this one checks all the boxes.

Enjoy!

Keto Crockpot Sausage and Peppers

Faiza Shabir

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 30 minutes mins

Total Time 45 minutes mins

Servings 4 servings

Ingredients

  

• 2 pounds Italian sausage links (mild, hot, or a mix; look for sugar-free)
• 3 bell peppers (any colors), sliced into 1/2-inch strips
• 1 large yellow onion, sliced
• 3 cloves garlic, minced
• 1 (14.5-ounce) can diced tomatoes, no sugar added
• 1/2 cup low-sugar marinara or crushed tomatoes (optional for saucier results)
• 2 tablespoons olive oil
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• 1/2 teaspoon crushed red pepper flakes (optional)
• 1 teaspoon kosher salt, plus more to taste
• 1/2 teaspoon black pepper
• Fresh parsley or basil, chopped, for garnish

Instructions

 

• Brown the sausage (recommended): Heat a skillet over medium-high and add 1 tablespoon olive oil. Sear the sausage links 2–3 minutes per side until nicely browned. This step adds deep flavor and helps the sausage hold its shape. If you’re short on time, you can skip this and add the sausages straight to the slow cooker.
• Layer the vegetables: Add sliced peppers and onions to the crockpot. Drizzle with the remaining olive oil and sprinkle with salt and pepper. Scatter in the minced garlic.
• Add tomatoes and seasonings: Pour in the diced tomatoes and marinara or crushed tomatoes, if using. Add oregano, basil, and red pepper flakes. Stir the vegetables and sauce together to distribute the seasonings.
• Nestle in the sausages: Place the browned sausage links on top of the pepper and onion mixture. Spoon a little sauce over them.
• Cook low and slow: Cover and cook on Low for 5–6 hours or on High for 2.5–3.5 hours, until peppers are tender and sausages are cooked through.
• Adjust seasoning: Taste the sauce and add more salt, pepper, or red pepper flakes as needed. If you prefer a thicker sauce, remove the lid and cook on High for 20–30 minutes to reduce slightly.
• Serve: Slice the sausages if desired. Spoon into bowls with plenty of peppers and sauce. Garnish with chopped parsley or basil. Serve as is, over cauliflower rice, or tucked into crisp lettuce wraps.