I think these are about the cutest baking cups I've ever had, but they are HUGE! I'm not sure how to scale a muffin or cupcake to these. That said, we used them a bunch for snacks for my toddler and for my family over Christmas - they're a great size for snacking. They'd also be great for giving a gift of something smaller-batch if you stuck it in a cellophane bag - a stack of pralines or other homemade candy, a few cookies as a to-go gift, a bag of cute marshmallows to accompany a hot chocolate mix, maybe - and I will definitely still use them for things like that! But I personally don't think I'd make cupcakes or muffins this large.