Cinnamon Sugar Butter Swim Biscuits are buttermilk biscuits baked in melted butter, brown sugar, and cinnamon and topped with more cinnamon and sugar. They are baked to golden brown with a fluffy interior and slightly crispy exterior. Just wait until you bite into one of these biscuits (I love the bottom crust). They are so buttery, full of cinnamon flavor, and delicious!