Cookie Salad

I have had this craving for one of my favourite dishes, but have no occasion that I can make it for. So I have decided to share it here for all of you, I love it because it is called a salad so it can be eaten with a meal, but it is defiantly more of a desert:

Cookie salad
mix:
1 cup                    buttermilk
1 pkg                     small vanilla instant pudding mix
½ container        Cool Whip

add to above:
1 can                      drained pineapple tidbits
1 can                      drained mandarin oranges
2 cups                   grapes
add 1 cup of broken up chocolate coated shortbread cookies just before serving