Preheat the oven to 350 F (180C) and line a baking sheet with parchment paper.
Add the sourdough bread cubes (crust and all) to a large bowl. Drizzle in the olive oil,and add all the remaining ingredients. Toss to combine thoroughly and evenly coat the bread with the oil.
Spread the coated bread cubes out onto the parchment paper lined baking sheet, spacing them out so they aren't touching each other.
Bake for 15-20 minutes, until golden brown and crunchy. Halfway through baking time, use a spatula to toss the cubes around a little.
Cool completely, then store in an air tight container at room temperature. Enjoy!
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Notes
Storing Leftovers: Leftover croutons will last in an airtight container for 1 week and sometimes up to 2 weeks.You can use whatever bread you have on hand, and any combination of herbs and spices you like.Enjoy these on salads, soups, on top of casseroles, and as a stuffing!