Pineapple upside down Cake

Making this kind of cake was in my mind for a long time. After a long gap, I set to bake a cake since I had all the ingredients and suddenly when I spotted a tray of freshly cut pineapple in my refrigerator, I decided it was going to be a Pineapple upside down cake. It came out great and tasted delicious too. I used the usual cake recipe I use for most of my cakes and it really works. The cake was just perfect and spongy and now I am more confident of the basic recipe.

Ingredients-
Plain flour- 2 cups
Baking powder- 4tsps
Baking soda - 1tsp
Eggs- 2
Oil- 1/2cup
Milk-1/4 cup
Pineapple essence-1tsp(I used vanilla)
Sugar- 1 cup+1tbsp(I used fine white sugar, but you can use soft brown sugar instead)
Pineapple slices or rings- I used halved slices.

Method-
Grease your cake tin with butter or oil. Sprinkle a layer of sugar on the tin. Arrange the pineapple slices to fill up the tin.
Now beat the eggs till frothy. Add the oil and milk. Mix well. Now combine the sugar and essence and mix well.
Combine the dry ingredients together and then mix it with wet ingredients mixture gradually. Now pour this batter gently into the cake tin containing the pineapple slices .
Bake this in a preheated oven at 180c for about 35 minutes.
Cool the cake for 5 minutes and loosen the edges and invert it on a wire rack.