Preheat oven to 350°F, prepare pans. Melt butter, blend in milk, eggs & pineapple. Combine sugar, flour, b/pdr, salt & coconut. Add to wet mix until just combined. At this stage if mixture is too dry add another 1/4 cup of milk. Spoon into pans & sprinkle tops with sugar, bake for about 20 mins or until golden brown. This recipe came from a lady that makes muffins for a living, consequently they will rise up rather large! You might like to try them with less baking powder.