I was interested in making the recipe from the July 2010 issue.  the Old-Fashioned peach cobbler.  But upon following the recipe to the T. I found an error (I think!).  I had done the combine br. sugar, cinn., lemon rind & juice added peaches, and transferred to baking dish.  Etc. etc.  but the next step was to beat the butter and SUGAR til light and fluffy.  Well I had already added the brown sugar to the peaches, so did we forget a step or forget another added amount of sugar to this recipe?  I improvised but wondered what the actual recipe called for.  I did have to add another 10 minutes of baking time to this also to get the batter to cook completely through.  Pls. explain what I did wrong or misunderstood to get the next time done correctly.  

Thanks,

Kim E.