u/GeologistKind7108

I am currently baking a cake for my nephew‘s birthday I have just baked 2 6 inch cakes and they’ve come out like this I’ll attach a photo. The recipe I used was 225G golden caster sugar, 225G self raising flour, 225 G stork, 5 large eggs, 2tsp baking powder 2tsp vanilla 2 tbsp milk, the recipe Temp says 160°c but I only have a gas oven so I set it at gas 4
Creamed butter and sugar added one egg at a time shifted flour baking powder and a pinch of salt added vanilla and milk and folded till combined split between two tins and cooked in the oven for 35 minutes I checked them. They weren’t done cooked another 10 minutes. They are dipped in the middle. If anyone’s got any advice, it would be greatly appreciated.