Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2      tablespoons   margarine
     1/4  cup           onion -- chopped
     1/4  cup           red pepper -- chopped
  10      milliliters   garlic -- minced
   1      can           tomatoes -- (16 oz.)
   1      teaspoon      basil
     1/2  teaspoon      cayenne pepper
     1/2  teaspoon      salt
     1/4  teaspoon      white pepper
   3      teaspoons     cornstarch
   2      tablespoons   cold water
     1/2  pound         fresh shrimp or
     1/2  pound         frozen shrimp -- thawed
     1/2  pound         fresh crab or
     1/2  pound         frozen crab -- thawed
   2      cups          peppery rice

Preparation:

Melt margarine in a medium skillet. Add onion, red pepper and garlic. Cook Salt and white pepper. Cover, reduce heat, simmer for 10 minutes. Combine cornstarch and water in a small bowl. Mix well. Add to tomato mixture. Stir until bubbly. Add shrimp and crab and heat to boiling. Reduce heat and simmer for 10 minutes or until seafood is thoroughly cooked. Serve on top of rice. Source: More Cajun Cooking, Modern Publishing