In a small bowl, combine the finely grated garlic and melted butter. Allow to sit for a few minutes or up to a couple of hours for the flavors to infuse.
Cut the bread into small cubes and place into a medium-sized bowl. Toss with the garlic and butter. Spread the cubes out over a baking sheet sprayed with cooking spray. Sprinkle with salt and Italian seasonings.
Bake in the preheated oven until golden brown, about 10 to 15 minutes. Remove the croutons from the oven and toss with the parmesan cheese. Bake for an additional 3 to 5 minutes to melt the cheese.
Allow the croutons to cool completely , then store in an airtight container for up to a few days.