Trent on Instagram: "After seeing @sallytbakes’ post about this Apple Cider Doughnut Cake with Brown Butter, I knew I needed it in my life! Sally generously shared her adapted version of @howsweeteats’ recipe. This supremely moist, tender cake features apples cooked in apple cider and then mashed along with warm fall spices like cinnamon, nutmeg, and allspice. Once cooled, you brush the cake with brown butter and coat it with the classic cinnamon-sugar mixture that makes apple cider donuts…