Preheat your oven to 160C / Gas Mark 3 and line an 8inch / 20cm round cake tin with baking parchment.
Peel the pears to remove the skin, then cut them in half and remove the core with a melon baller. Slice each half of pear lengthways into four equally sized pieces, being sure to trim off any pieces of stalk or other less edible parts.
Arrange your pear slices in a neatly fanned circle in the bottom of your cake tin. Depending on the size of your pears you might end up with a few slices left over for snacking.
Next make your caramel by placing the sugar and water in a heavy bottomed pan on a medium heat. As you heat the pan the sugar should dissolve into the water and the syrup should start to boil. You want to boil the syrup until it turns a nice deep caramel colour. You can swirl the pan during the cooking but don’t stir it as this increases the chances of the sugar crystallising.
As soon as your caramel is the right colour, drizzle it as evenly as possible over your pear slices, then set aside while you prepare the cake mixture.
First, cream together your butter and sugar using a stand mixer or electric whisk.
When the mixture is pale and fluffy add in the poppy seeds and almond extract, then beat in your eggs one at a time.
Sift together your self-raising flour, ground almonds and baking powder. Fold these dry ingredients into the butter and egg mixture. Once everything is well incorporated stir in the milk.
Spoon the cake mixture on top of the pears and carefully level it off with a spatula. If you make a gentle indent in the middle of the cake mixture it will compensate for the rise. This helps make the top of your cake flat when it’s baked, making it a better shape when you turn it upside down.
Bake the cake in your preheated oven for 1 hour – 1 hour 10 mins until an inserted skewer comes out clean. If you’re using a sprung form cake tin, I recommend baking the cake with an oven tray on the shelf underneath to catch any oozing caramel or escaping fruit juice.
Once your cake is baked, leave it in the tin until it’s cool to touch, then turn out upside down onto a plate or serving dish to reveal the sticky golden caramelised pears.