My boyfriend asked me to make some icing with our cbutter, so I accidentally stopped listening to him and used an entire cup of it (per the recipe, at least), instead of the 1.5 tbsp he told me to mix with regular butter. Needless to say, we have a regular ol' batch of icing that would probably send you five dimensions from here with one teaspoon. Should I just make another batch of "safe" icing and combine the two? Or would you suggest doubling the plain icing and then mixing?