Throw in the diced bell pepper, chopped onion, and minced garlic. Cook until the veggies are tender.
Transfer the ground pork mixture into your crock pot and add the rest of the ingredients accept the pasta.
Pop the lid on your slow cooker and set it to cook on low for about 4-6 hours.
If you find that the casserole is looking a bit dry during the cooking process, feel free to add a splash of extra chicken broth to maintain the desired consistency.