Ingredients

• 1 pound raw large raw shrimp (26-30 shrimp), peeled and deveined
• 1 ½ teaspoons cajun seasoning
• 12 ounces fettuccine, preferably whole-wheat
• 1 tablespoon extra-virgin olive oil, divided
• 1 bunch scallions
• 1 medium red bell pepper, thinly sliced lengthwise
• 3 cloves garlic, minced
• 1 tablespoon unsalted butter
• ½ teaspoon ground pepper
• 1 tablespoon all-purpose flour
• 1 cup reduced-sodium vegetable broth
• ½ cup half-and-half
• 1 (5 ounce) package baby spinach
• ⅓ cup sour cream
• ½ teaspoon salt