Pineapple Upside Down Cake

We are having a challenge on Vi’s Pantry at the moment taking recipes from Nigella Express. This cake was one of the challenges set. This cake /dessert is a real retro dish. So easy to make. Tastes and looks wonderful and, if there is any left, keeps well in the fridge I will definitely be making this again and again. so quick to put together and so pretty on the table. I expect you can make this with fresh pineapple but the canned variety of pineapple rings are so even and soft and easy to mould into the tin.. The fresh may be better for you but I think Ill stick with the canned variety.

2 x 15ml tbsp sugar
6 slices pineapple from a 425g can, plus 3 x 15ml tbsp of the juice
11 glacé cherries, approx 75g total weight
100g flour
1 tsp baking powder
¼ tsp bicarbonate of soda
100g soft butter
100g caster sugar
2 eggs

Method
1 Preheat the oven to 200C/Gas 6.
Butter a Tarte Tatin tin (24cm wide at the top and 20cm diameter at the bottom) or use a 23cm cake tin (neither loose bottomed nor spring form).
2 Sprinkle 2 tbsp sugar onto the buttered base, and then arrange the pineapple slices to make a circular pattern as in the picture.
3 Fill each pineapple ring with a glacé cherry, and then dot one in each of the spaces in between.
4 Put the flour, baking powder, bicarbonate of soda, butter, caster sugar and eggs into a food processor and run the motor until the batter is smooth. Then pour in the 3 tbsp pineapple juice to thin it a little.
5 Pour this mixture carefully over the pineapple rings; it will only just cover it, so spread it out gently.
6 Bake for 30 minutes, then ease a spatula around the edge of the tin, place a plate on top and, with one deft move, turn it upside-down.

Note
I used a 20cm sandwich tin as it is what I had
I used self raising flour and soft marg.