INGREDIENTS
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8 tablespoons (1 stick) unsalted butter
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1 tablespoon plus 1 teaspoon all-purpose flour
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2 green bell peppers, cut lengthwise into 1/4-inch-thick slices
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1 large onion, halved lengthwise and cut into 1/4-inch-thick slices
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2 celery stalks, cut into 1/2-inch-thick pieces
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6 canned whole plum tomatoes (from one 28-ounce can), crushed
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1 can (14 1/2 ounces) low-sodium chicken broth
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2 teaspoons chopped fresh flat-leaf parsley, plus more for garnish
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1 1/2 teaspoons Cajun seasoning
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1/2 teaspoon paprika
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1/2 teaspoon coarse salt
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1/2 teaspoon hot sauce, such as Tabasco, or to taste
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1 pound large shrimp (21 to 30), peeled and deveined
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2 cups cooked white rice, for serving