In a small bowl, combine the maple syrup, lemon juice and olive oil (or mayonnaise) to create the vinaigrette. Set aside.

Cut the spinach finely and slice the tomatoes in half.

In a small bowl, coarsely mix tuna, cottage cheese, dried cranberries and green onions with a fork. Set aside.

Spread spinach and arugula on a plate. Add the tuna mixture and tomatoes. Serve with the vinaigrette.