Preheat oven to 350°F. Lightly grease 8x8x2-inch pan.
In medium bowl, whisk together 1 pouch Meyer lemon filling mix, water and eggs until well blended. Set aside.
Stir crust mix and melted butter until crumbly dough forms. Press dough evenly into bottom of pan. Bake 12-14 minutes.
Whisk filling mixture again, then stir in pineapple and coconut. Pour the mixture over hot crust.
Bake 32-36 minutes or until center does not jiggle when shaken and top begins to brown. Cool completely and cut into squares. Store covered in the refrigerator.