Preheat the oven 350F. First mix the eggs with the sugar
Add the canned caramel, sour cream, soda mixed with vinegar and mox well
Add the dry ingredients( flour and cocoa). You should get a runny batter
Pour into a greased pan and bake 30-40 minutes, until a toothpick inserted in it comes out clean
While the biscuit is cooling lets make the frosting. Mix the softened butter and caramel very well.
Add the cocoa and vanilla and mix until smooth.
Cut and serve