Spicy Skillet Ziti with Peppers and Onions Recipe

2 tablespoons olive oil
5 cloves garlic, minced
1/2 tablespoon crushed red pepper flakes
1 28 ounce can of crushed tomatoes
3 cups water
1 pound ziti
1 yellow pepper, cut into chunks
1/2 onion, cut into chunks
1/2 cup heavy cream
1/2 cup ricotta cheese
1/4 cup Parmesan cheese, grated
salt
pepper
4 ounces fresh mozzarella, sliced
basil