Hummingbird sheet cake

Cake:

• 4 egg large, free-range
• 210 white sugar or light brown sugar, gms or 1 1/2 cups
• 250 ml sunflower oil 1 cup
• 280 cake flour gms or 2 cups
• 1/2 tsp salt
• 2 tsp baking powder
• 1 tsp bicarbonate of soda aka baking soda
• 1 tsp cinnamon
• 1/4 tsp cloves
• 1/4 tsp nutmeg
• 450 gms drained weight or 2 cups of pineapple (tinned or fresh), finely chopped
• 350-360 banana about medium, gms or 1 1/2 cups, roughly mashed
• 3/4 walnuts chopped, of a cup of

Cream cheese Icing:

• 100 butter room temperature, gms
• 140 cream cheese President brand, thick and smooth, plain, gms
• 450 icing sugar gm or 3 cups
• 2 tsp lemon juice
• walnuts or pecan nuts, chopped, extra, for decoration