This easy Slow Cooker Italian Sausage Subs with Peppers and Onions recipe is the perfect hearty meal for any day. With juicy Italian sausages, tender peppers, and a savory tomato sauce, it’s a simple, hot dish you can make with everyday ingredients. Serve it on toasted hoagie rolls for a satisfying bite!

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Recipe Ingredients

• 1 (28-oz [794-g]) can of crushed tomatoes
• 1 tsp dried oregano
• ⅛ tsp red pepper flakes
• 1 tbsp (15 ml) oil
• 1 large onion, sliced
• 2 bell peppers, thinly sliced
• Salt and pepper, to taste
• 1 lb (454 g) Italian sausage links
• 1 tbsp (3 g) fresh basil, thinly sliced
• 5 hoagie rolls, toasted

How To Make Slow Cooker Italian Sausage Subs With Peppers And Onions

1. Prepare the sauce: Stir together the crushed tomatoes, oregano, red pepper flakes, oil, onion, bell peppers, salt, and pepper in your 6-quart (6-L) slow cooker.
2. Cook the sausages: Lay the sausage links in a single layer over the tomato mixture. Cover and cook on high for 3 hours or on low for 6 hours.
3. Add fresh basil: Sprinkle the fresh basil into the slow cooker.
4. Assemble the subs: Serve the sausages with the onions and peppers on toasted hoagie rolls.

Recipe Tips

• Use quality sausage links: Choose high-quality Italian sausages for the best flavor and texture. Fresh sausages will make a noticeable difference in the final dish.
• Slice vegetables thinly: For even cooking, slice the onions and bell peppers thinly. This helps them soften and infuse the sauce with more flavor.
• Adjust the spice level: If you prefer a milder dish, reduce or omit the red pepper flakes. For extra heat, add more to taste.
• Toast the hoagie rolls: Toasting the rolls adds a nice crunch and prevents them from becoming soggy from the sauce.
• Let it rest before serving: After cooking, let the sausages sit for a few minutes before serving. This helps the juices redistribute, making the sausages juicier.

Recipe FAQs and Variations

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