Having all of your ingredients prepped and arranged ahead of time (known as mise en place) is a real cooking timesaver. But who wants to clean up a bunch of bowls or clutter up the cutting board? America's Test Kitchen offers a few solutions; one of them is to layer the ingredients in one bowl.
Separate each layer with a sheet of wax paper or plastic wrap and put the ingredients in the order you'll need them for cooking. This way, you'll only have one bowl to wash and save space on your kitchen counter to boot.
Another solution is to use coffee filters instead of bowls.
3 Perfect Prep Containers [America's Test Kitchen]