Happy happy and Congratulations on such a milestone! I have a question on the ingredients. Why does the recipe call for both butter and vegetable oil? Is there a specific reason, or can you substitute all of either one for the other? Thanks so much! Wendy, I'd say butter adds flavor; oil adds more liquid fat, which tends to keep muffins softer. You could certainly do all of one or all of the other, but I like the combination. Up to you - baker's choice! :) PJH

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