This is a wonderful thing with a wonderfully funny name. The name swim biscuits/swim cake comes from the idea that the batter is swimming in butter at the point of baking! Essentially, you make up a thick batter and pour it into the dish which already has the melted butter in it!
450mlButtermilk(or prep at the start: 440ml Milk with 10ml White Wine Vinegar/Lemon Juice)
100-150gFrozen Berries
100gUnsalted ButterMelted
Instructions
Preheat the oven to 200C/180C Fan/Gas Mark 6. Have an 8" square pan ready.
In a large bowl, combine the flour, baking powder, sugar, buttermilk, and lemon juice and zest. Gently stir in the berries.
Melt the butter and pour this into the baking dish. Add in the batter and spread across the dish. Bake about 30-35 minutes, until the top is golden and a knife inserted comes out clean! Let cool a little before slicing and serving.