preheat oven to 350°F.

Grease the bottom of a 9x13 - inch baking pan

stir flour,sugar,baking soda,and salt together.

And undrained pineapple,eggs,oil and vanilla; mix well.

Pour batter into pan.

Bake for 20 to 25 minutes or untill a toothpick inserted in the corner comes out clean.

Remove cake from oven and top with coconut nut topping if desired.