Lightly spiced and studded with pecans, this apple cake stays moist and flavorful from both shredded and diced apples in the batter. For the filling, pecans are folded into warm, cinnamon toffee that hardens and SNAPS when cooled. The pecan toffee is then finely chopped before being folded through silky, smooth Swiss meringue buttercream.

Tint the butter…