How many ounces of flour, butter and sugar do i need?

I have decided to bake some muffins, but just plain cake nothing else inside them. I have baked them before, but I cant remember what the recipe was. I know that I used 3 eggs, and I think I used 6 ounces of flour, but I can't remember how many ounces of sugar and butter I need when using 3 eggs. Please help me :) thank you x