West Coast Cod and Shrimp

Name: West Coast Cod and Shrimp
Ingredients: 2 cups water; 1 cup uncooked long-grain white rice; 1 teaspoon olive oil; 2 tablespoons butter; 1/4 cup minced onion; 1 tablespoon minced garlic; 1 1/2 cups heavy cream; 1/4 cup milk; 1 1/2 tablespoons cornstarch; 1/2 pound fresh shrimp, peeled and deveined; 1 cup sliced fresh mushrooms; 1 tablespoon chopped fresh dill; seasoning salt to taste; pepper to taste; 1 pound cod fillets; 1 tablespoon grated Parmesan cheese; 1 tablespoon chopped fresh parsley