Instructions:
Preheat oven to 350 degrees.
Grease or spray with baking spray a 13 x 9-inch baking dish. In a large bowl, mix together flour, sugar, baking soda, eggs, vanilla, and crushed pineapple (with juice) until well combined.
Pour batter into prepared pan and bake for 40-45 minutes or until golden brown.
While cake is baking, heat butter, evaporated milk, vanilla, and sugar in a medium-sized saucepan until it begins to boil over medium-high heat.
Stir in pecans or walnuts and coconut and continue cooking on medium heat about 5 minutes, stirring constantly. The mixture will thicken slightly.
Remove baked cake from oven and poke holes all over the top using a wooden chopstick or the tines of a large serving fork.
Spread topping evenly over the top of the warm cake and let cool.
Slice and serve!
