Coffee Cake Muffins

My dad has a very real addiction . . . to Dunkin’ Donuts. His order: a medium hot coffee with skim milk, no sugar, and a coffee cake muffin. If you’ve never experienced a coffee cake muffin from Dunkin’ Donuts, its sheer size sets it apart from any other variety I’ve ever known. A soft, cakelike, cinnamon-swirl muffin base sits below its crunchy, crumbly sweet muffin top (my dad’s favorite part, and understandably so). This fondness has been passed down to his children, and now we all love