In case you were wondering what happened to the rainbow sprinkle supply... Don't they just scream happy? Sugar cookie bars are one of the easiest desserts you will ever make and one of the best! These are my go-to when I want something super homey, comforting, vanilla-y, and sprinkly to the max with all the pink buttercream my heart could ever desire! They're the type of treat I made as a kid that made me freak out with excitement, and nothing has changed! Still freaking out over here, and then I thought what better recipe to share ...