
Preheat oven to 375F (190C) and line a large baking sheet with parchment paper. Set aside.
Place bread in a large bowl and drizzle olive oil over top. Use a spatula to gently toss together until all bread cubes have been lightly moistened.
Add garlic, italian seasoning, salt, pepper, and cheese (if using) and use your spatula to gently toss all ingredients together until seasoning is well distributed over the bread cubes.
Spread bread evenly over prepared baking sheet and bake in center rack of 375F (190C) (use 350F/175C if baking an enriched bread like brioche) preheated oven for 30-35 minutes, until all bread pieces are firm and crisp.
Allow to cool before using (they should be more crisp after cooling).