u003cstrongu003eThe best way to ensure both a delicious and structurally sound magic cookie bar is to add all your ingredients in very even layers. u003cbr/u003eu003c/strongu003eu003cbr/u003eSo make sure your graham crust has an even thickness throughout the pan. And take your time to slowly pour on the condensed milk to fully cover all the holes. Then last but not least, sprinkle your upper ingredients on in a number of different batches for even distribution (leaving enough to patch to any big holes at the end).u003cbr/u003eu003cbr/u003eu003cstrongu003eu003cemu003ePro baker tipu003c/emu003eu003c/strongu003e: you'll sprinkle ingredients into the pan much more evenly if you u003cstrongu003esprinkle from a little higher up u003c/strongu003eas opposed to having your hand right above the surface of the bars.