Follow these easy steps to create your Juicy Pineapple Heaven Cake:

1. Preheat the Oven: Begin by preheating your oven to 350°F (175°C). Grease and flour three 9-inch round baking pans.

2. Mix Dry Ingredients: In a large bowl, whisk together flour, sugar, coconut flakes, baking powder, baking soda, and salt.

3. Cream Butter: In another bowl, beat the softened butter until creamy. Gradually add in the sugar and continue mixing until light and fluffy.

4. Combine Wet Ingredients: Add the crushed pineapple, buttermilk, eggs, and vanilla extract to the butter mixture. Mix until well combined.

5. Combine Mixtures: Gradually add the dry ingredients into the wet ingredients. Stir until smooth and no lumps remain.

6. Divide and Pour: Divide the batter evenly among the three prepared cake pans.

7. Bake: Place the pans in the oven and bake for 30-35 minutes or until a toothpick inserted in the center comes out clean.

8. Cool the Cakes: Once baked, remove the cakes from the oven and allow them to cool in their pans for 10-15 minutes. Then, carefully transfer them to wire racks to cool completely.

9. Prepare the Frosting: While the cakes cool, beat heavy cream in a bowl until soft peaks form. In another bowl, beat the cream cheese and gradually add powdered sugar and vanilla extract until smooth. Gently fold in whipped cream until blended.

10. Layer the Cake: Once cool, place one cake layer on a serving platter. Spread a layer of frosting over it, then add the second cake layer on top. Repeat for the third layer.

11. Decorate: Top the last layer with the remaining frosting. Garnish with fresh pineapple slices and coconut flakes if desired.

12. Serve: Slice and serve your delicious Juicy Pineapple Heaven Cake, enjoying the mix of flavors!