Tuna Crunch Open Sandwich

This vitamin- and fiber-rich sandwich is elegant enough to serve to guests, but oh-so simple to make! For a fancy gathering, cut bread with a round cookie cutter.

Ingredients:

• 4 tablespoons light mayonnaise
• 1 teaspoon whole grain mustard 
• 100-gram can tuna in water
• 1 celery stick, chopped
• half a Granny Smith apple, cored and chopped
• 1 tablespoon unsalted almonds or walnuts, chopped
• 2 slices whole-wheat bread
• a bunch of mesclun or baby spinach

Procedure

1.  In a bowl, mix together light mayonnaise and mustard. Stir in tuna, celery, apple, and nuts.
2.  Place mesclun or baby spinach on each bread slice.
3.  Top with tuna mixture. Serve.