Italian crockpot sausage, peppers, and onions is a delightful dish that brings warmth and flavor to any occasion. This Slow Cooker Sausage and Peppers and Onions recipe is perfect for busy weeknights or weekend gatherings. With its rich taste and simple preparation, it’s a go-to meal that everyone will enjoy. You can serve the sausages straight from the pot, top them with melted cheese, or pile them onto a bun for a satisfying sandwich.
Why You’ll Love This Recipe
- Quick Prep Time: With just 10 minutes of prep, you can set this dish and forget it.
- Flavorful Profile: The combination of Italian seasoning, garlic salt, and marinara creates layers of deliciousness.
- Versatile Serving Options: Enjoy it as a hearty main dish or on buns for an easy yet tasty sandwich.
- Crowd-Pleaser: Perfect for family dinners or gatherings with friends—everyone loves sausage and peppers!
- Minimal Cleanup: Using a slow cooker means fewer pots and pans to wash afterward.
Tools and Preparation
To make this delicious Slow Cooker Sausage and Peppers and Onions recipe, you’ll need some essential kitchen equipment. Having the right tools makes the cooking process smoother.
Essential Tools and Equipment
- Slow cooker
- Skillet
- Cutting board
- Knife
- Measuring spoons
Importance of Each Tool
- Slow cooker: This tool allows for hands-off cooking while developing deep flavors over hours.
- Skillet: Searing the sausages before slow cooking enhances their flavor and texture.
- Cutting board & Knife: Essential for safely slicing vegetables to ensure even cooking.

Ingredients
For the Sausages
- 1 pkg Italian sausages (5, uncooked)
For the Vegetables
- 2 bell peppers, sliced (red & green)
- 1 large onion, sliced
Seasonings
- 1/2 tsp garlic salt (or salt + garlic powder)
- 1/2 tsp Italian seasoning
- 1/2 tsp freshly ground black pepper
For the Sauce
- 1 cup marinara or pasta sauce (Rao’s recommended)
For Cooking
- 1 Tbsp olive oil
Optional Topping
- 1/2-3/4 cup shredded Mozzarella cheese (not pre-shredded)
How to Make Slow Cooker Sausage and Peppers and Onions
Step 1: Sear the Sausages
- Heat a skillet on medium heat and add a drizzle of olive oil to the pan.
- Sear the Italian sausages for 2-3 minutes on each side until they start to brown.
- Transfer them to the bottom of a slow cooker.
Step 2: Prepare Vegetables
- Add sliced onions and bell peppers on top of the browned sausages.
- Sprinkle with garlic salt, black pepper, and Italian seasoning evenly over the vegetables.
Step 3: Add Sauce
- Spread marinara sauce over the onion and pepper mixture in the slow cooker.
Step 4: Slow Cook
- Cover the slow cooker.
- Cook on high for 3-4 hours or low for 6-7 hours until the peppers are soft and sausages are fully cooked.
Enjoy your deliciously savory Slow Cooker Sausage and Peppers and Onions, perfect for sharing with family or friends!
How to Serve Slow Cooker Sausage and Peppers and onions
This slow cooker sausage and peppers and onions dish is versatile and can be served in various delicious ways. Whether you want a hearty meal or a light snack, these serving suggestions will enhance your dining experience.
On a Bun
- Serve the sausage and peppers on a toasted bun for a classic sandwich experience. Top with additional marinara sauce for extra flavor.
With Broiled Cheese
- After cooking, place the sausage and peppers in an oven-safe dish, sprinkle with shredded mozzarella cheese, and broil until bubbly. This adds a delightful cheesy layer to your meal.
Over Rice
- Spoon the sausage and peppers mixture over a bed of fluffy rice. This option absorbs the sauce perfectly, making each bite flavorful.
With Pasta
- Toss cooked pasta with the sausage and pepper mixture for a hearty Italian-style dish. Add some grated Parmesan cheese for extra richness.
As Tacos
- Use soft tortillas to create tasty tacos filled with sausage, peppers, and onions. Top with your favorite salsa or avocado for added freshness.
How to Perfect Slow Cooker Sausage and Peppers and onions
To achieve the best results when making slow cooker sausage and peppers and onions, consider these handy tips.
- Sear the Sausages: Browning the sausages before adding them to the slow cooker enhances their flavor and adds depth to the overall dish.
- Use Fresh Ingredients: Fresh bell peppers and onions provide vibrant flavors and textures. Avoid using pre-sliced vegetables if possible for optimal taste.
- Adjust Seasoning: Taste your dish during cooking. You may want to add more garlic salt or Italian seasoning based on your personal preference.
- Layer Wisely: Place sausages at the bottom of the slow cooker, followed by onions and peppers. This ensures even cooking as flavors meld together beautifully.
- Choose Quality Sauce: A good marinara sauce can elevate this dish significantly. Look for high-quality brands like Rao’s for authentic taste.
Best Side Dishes for Slow Cooker Sausage and Peppers and onions
Pairing side dishes with your slow cooker sausage and peppers can create a well-rounded meal. Here are some excellent options to consider:
- Garlic Bread: Crispy garlic bread is perfect for soaking up any leftover sauce from your main dish.
- Caesar Salad: A fresh Caesar salad provides a crunchy contrast to the soft texture of the sausages and peppers, adding freshness to your plate.
- Steamed Broccoli: Lightly steamed broccoli offers nutritional balance while complementing the savory flavors of the main dish.
- Coleslaw: The crunchiness of coleslaw adds texture; plus, its tangy dressing pairs well with rich flavors of sausage.
- Roasted Potatoes: Seasoned roasted potatoes can serve as a hearty side that balances out the meal nicely with their crisp exterior.
- Quinoa Salad: A light quinoa salad can bring additional protein while keeping things healthy; mix in cherry tomatoes, cucumbers, and herbs for freshness.
Common Mistakes to Avoid
When making Slow Cooker Sausage and Peppers and onions, it’s easy to overlook some key steps. Here are common mistakes to avoid for the best results.
- Not Browning the Sausages: Skipping this step can lead to less flavor. Always sear the sausages before placing them in the slow cooker to enhance taste.
- Overcrowding the Slow Cooker: Filling it too much can prevent proper cooking. Ensure there’s enough space for steam to circulate for even cooking.
- Using Low-Quality Sauce: A poor-quality marinara can ruin your dish. Opt for a high-quality sauce like Rao’s for the best results.
- Ignoring Cooking Times: Cooking on high or low without following time guidelines can affect texture. Stick to recommended times for perfect tenderness.
- Forgetting Seasonings: Not seasoning properly can lead to blandness. Always sprinkle seasonings evenly over all ingredients for balanced flavor.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container in the fridge.
- Best eaten within 3-4 days.
Freezing Slow Cooker Sausage and Peppers and onions
- Use freezer-safe containers or bags.
- Can be frozen for up to 2-3 months.
Reheating Slow Cooker Sausage and Peppers and onions
- Oven: Preheat to 350°F (175°C). Place in a baking dish covered with foil for about 20 minutes.
- Microwave: Heat in a microwave-safe bowl on medium power, stirring halfway through until heated through (about 2-3 minutes).
- Stovetop: Heat in a skillet over medium heat, stirring occasionally until warmed throughout.
Frequently Asked Questions
If you have questions about preparing Slow Cooker Sausage and Peppers and onions, you’re not alone! Here are some common queries.
How do I make Slow Cooker Sausage and Peppers and onions spicier?
To add heat, consider adding red pepper flakes or using spicy Italian sausages instead of mild ones.
Can I use other types of meat?
Yes! You can substitute chicken, beef, or turkey sausages if you prefer a different flavor profile.
What side dishes pair well with Slow Cooker Sausage and Peppers and onions?
Serve with crusty bread, pasta, or a fresh salad to balance the rich flavors of the dish.
How do I store leftovers of Slow Cooker Sausage and Peppers and onions?
Store leftovers in an airtight container in the refrigerator or freeze them for later enjoyment.
Final Thoughts
This Slow Cooker Sausage and Peppers and onions recipe is not only delicious but also incredibly versatile. You can customize it with your favorite vegetables or spices. Give it a try, and enjoy a hearty meal that’s perfect any day of the week!

Slow Cooker Sausage and Peppers and Onions
- Total Time: 0 hours
- Yield: Serves 6
Description
Indulge in the comforting warmth of Slow Cooker Sausage and Peppers and Onions, an effortless dish that captivates with its robust flavors and delightful aroma. This recipe is designed for those busy weeknights or casual weekend gatherings when you want to serve something hearty without spending hours in the kitchen. With just a few simple steps and a handful of fresh ingredients, you’ll create a delicious meal that can be enjoyed on its own or served on a bun, topped with melted cheese for an irresistible sandwich.
Ingredients
- Chicken, beef, lamb, or turkey sausages
- 2 bell peppers (red & green), sliced
- 1 large onion, sliced
- 1 cup marinara sauce
- Olive oil
- 1/2 tsp garlic salt
- 1/2 tsp Italian seasoning
Instructions
- Heat olive oil in a skillet over medium heat. Sear your choice of sausages for 2-3 minutes on each side until browned. Transfer them to the slow cooker.
- Layer sliced onions and bell peppers over the sausages.
- Sprinkle garlic salt and Italian seasoning evenly across the vegetables.
- Pour marinara sauce over the top.
- Cover and cook on high for 3-4 hours or low for 6-7 hours until everything is tender.
- Prep Time: 10 minutes
- Cook Time: High for 3-4 hours or Low for 6-7 hours
- Category: Main
- Method: Slow Cooking
- Cuisine: Italian
Nutrition
- Serving Size: 1 bowl (approximately 300g)
- Calories: 290
- Sugar: 5g
- Sodium: 680mg
- Fat: 15g
- Saturated Fat: 5g
- Unsaturated Fat: 9g
- Trans Fat: 0g
- Carbohydrates: 20g
- Fiber: 3g
- Protein: 22g
- Cholesterol: 55mg