Mix together flour, baking powder, baking soda, salt and cinnamon. set aside

Mix together sugar, eggs and oil .

Stir the sugar,eggs and oil mixture with the flour mixture.

Now add the grated carrots and drained pineapples to the flour mixture.and pour into baking dish. 9 x 12 x 2 .

Sprinkle nuts on top of mixture and bake at 350°F for 1 hr.

Let cool. Meanwhile cream together cream cheese, powder sugar, vanilla, and milk till creamy .

Once cool frost cake and serve. Refrigerate leftovers.