Ingredients:

1 1/4 - 1 1/2 lbs fresh Italian chicken sausage
3 bell peppers, sliced (I used a mix of green and yellow, feel free to use whatever you like)
1 large yellow onion, sliced
1 15oz can Italian style diced tomatoes, slightly drained
1 8 oz can tomato sauce
1 teaspoon dried Italian seasoning
1 teaspoon pesto, optional
1 tablespoon red wine vinegar, optional

Directions:

Preheat a skillet over medium-high heat. Add your chicken sausages to pan, cook on each side until browned, about 4-5 minutes total. Chicken sausage does not need to be cooked through. Set aside.
Add sliced peppers, onions, tomatoes, sauce, seasoning, pesto and vinegar into your slow cooker. Gently stir to combine. Add your sausages to top of vegetable and sauce mixture. Cover and cook on low for 6-8 hours.
Serve over pasta or with Italian bread.