What could be simpler than stuffing a pita pocket? These delicious greek pita sandwiches are perfect for vegetarians. I recommend you take the filling in a sealed plastic container, and fill the pitas just at serving time. Otherwise you will have soggy sandwiches!

In a small bowl, combine vinegar, lemon juice, parsley, oregano, mustard, and salt and pepper to taste. Whisk in the olive oil slowly until incorporated.

In another bowl, combine the tomatoes, cucumber, red onion, cheese, and olives. Pour in the dressing and mix well to coat. Adjust the seasoning to taste. Pour in a sealed plastic container to take along to the picnic.

At serving time, carefully split each pita bread along the edge to open halfway. Stuff the pitas with the dressing using a large spoon.