Chicken, Cheese and Apple Sandwiches

Ingredients

• 1 1/2 cups (255 g) cooked chicken, shredded
• 1/2 block (125 g) cream cheese, softened
• 1 cup (100 g) sharp cheddar cheese, grated
• 3 tbsp sour gherkins, chopped
• 2 tbsp dried cranberries
• 2 tbsp (30 ml) whole-grain mustard
• 1 tsp dried tarragon
• 1/2 tsp garlic powder
• 8 slices square white bread, each 1/2 inch (1.5 cm) thick
• Whole-grain or Dijon mustard, to taste
• 1 cup (25 g) arugula
• 1 Empire or Cortland apple, cored and thinly sliced