Tear the stale bread (I use whatever I have on hand, usually homemade) into chunks or pieces and place on a cookie sheet. I like to make breadcrumbs after I've turned off the oven. You want it to be warm (but not too hot), to dry out the pieces of bread).

Just leave the cookie sheet in overnight. However, you can turn the oven on to 200F (90C) and turn it after 10 minutes and then another 10 if you need them in a hurry.

When you're sure there's no moisture left in the bread, place the pieces in a blender or food processor and process until there are no big pieces left.

This time, use relatively fresh, just not extremely stale bread, and break into chunks or pieces and place directly into a blender or food processor. Put a little at a time or it can get stuck.

Process, and once uniform in size, spread the crumbs onto a cookie sheet or baking tray.

Place in a warm oven to dry. When these are used to coat your food, it will give a more crispy and crunchy coating.