Bell Pepper Slow Cooker Pasta

1 red pepper
1 yellow pepper
1 green pepper
1 medium onion
2 cans diced tomatoes, undrained
2 cans tomato paste
2T garlic, minced
1/4c olive oil
2t basil
2t oregano
1/2t red pepper flakes
1lb pasta, cooked
6T shredded Parmesan Cheese (opt)

Chop peppers into 1inch pieces.
Dice onions.
Add ingredients except pasta and cheese to the crockpot. Cook on low for about 7 hours. Mix in pasta. Add cheese when serving.

Optional: 1lb sausage, brown add when you add the pasta for non-vegetarian dish.