Cajun Spaghetti

Step 1
Mix 1/2 cup oil, tomato sauce, 1 1/4 cups water, basil, 1/2 teaspoon black pepper, 1/2 teaspoon crushed red pepper flakes, and 1/2 teaspoon salt in a 4- to 6-quart pot over medium heat. Bring to a boil, then reduce heat to medium-low; stir occasionally.

Step 2
Meanwhile, season shrimp with 1/2 teaspoon salt, 1/2 teaspoon black pepper, and 1/2 teaspoon crushed red pepper flakes; mix thoroughly and set aside.

Step 3
Warm 2 tablespoons oil in a medium saucepan over medium-high heat. Add green bell pepper, red bell pepper, onion, and garlic. Cook and stir until slightly softened, 3 to 5 minutes.

Step 4
Add vegetables to tomato sauce and cook over medium heat for 3 minutes. Reduce heat to low and cook, stirring occasionally, for 20 to 25 minutes.

Step 5
When sauce has 7 to 10 minutes to cook until completion, add seasoned shrimp to sauce; mix well. Bring heat to medium and stir occasionally.

Step 6
Mix cornstarch and 2 tablespoons cold water in a small bowl; add mixture to sauce when sauce has 2 minutes left until completion and mix well.

Step 7
Bring a large pot of lightly salted water to a boil. Add pasta and cook until al dente, 8 to 10 minutes; drain and place in a serving bowl.

Step 8
Pour sauce over pasta and sprinkle with green onions.