Preheat oven to 425°F (220°C). Place a rack about 10 inches below element.
Cut baguette on a diagonal into ¼-inch (0.5 cm) thick slices (you should have 10 to 12). Place baguette slices on rack, set over a baking pan. Bake for 4 to 6 minutes or until lightly toasted. Let cool on rack. Preheat broiler.
Rinse shrimp under cold water. Drain and dry well with a paper towel. Transfer shrimp to a food processor; pulse just until coarsely chopped. Transfer to a large bowl.
Mince green onion, setting aside about 1 tbsp (15 mL) of the green part. Add remaining green onion, soy sauce, ginger and cayenne (if desired) to shrimp; mix well.
Spread shrimp mixture onto toasts, spreading right to the edges and using all of the mixture. Place sesame seeds in a wide, shallow bowl. Press each toast, shrimp side down, into seeds to create a
thin crust. Place, seed side up, on rack over baking pan. Broil for
5 to 9 minutes or until sesame seeds are golden and shrimp mixture is pale pink and fully cooked. Let stand for 5 minutes. Sprinkle with reserved green onion.
Per Serving: 212 calories, 22 g protein, 4.7 g fat (1 g saturated fat), 20 g carbs, 2 g fibre, 161 mg cholesterol, 480 mg sodium bh