Preheat oven to 300 degrees Fahrenheit
Put gluten free bread in the food processor and process until bread is all made into small crumbs. Process longer for finer bread crumbs.
Spread out bread crumbs onto a parchment paper lined cookie sheet, make sure its a thin enough layer for the bread crumbs to dry out enough.
Place in oven for about 5 to 6 minutes, then stir and bake for another 5 to 6 minutes.
If your bread crumbs are not seeming dried out enough, bake for another 5 minutes or so.
Let cool completely before seasoning with 1 tbsp Italian seasoning and 1/2 tsp salt to 1 cup dried bread crumbs.
Store in an airtight freezer bag in the freezer until needed for up to 3 months.