We've all had those oops, moments, Shari! The safest thing to do would be to adjust all the ingredients up to meet that change in butter - in other words adding an extra 1/3 of each ingredient: 1 cup plus 1-2 Tbsp flour, 1/3 cup sugar, a small pinch of salt, and 1/3 tsp vanilla. Hope this helps! Mollie@KAF

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