Preheat oven to 400°F. Add bread cubes to a large bowl. Drizzle with olive oil and sprinkle with sea salt, pepper, and herbs. Use your hands to toss to combine. Spread croutons in an even layer on a baking sheet.
Bake croutons for 12 to 15 minutes, or until crispy. Add croutons to a bowl of Creamy Tomato Basil Soup or another favorite soup!