Preheat your oven to 350 F (180 C).
Evenly arrange the bread cubes on a sheet pan in one single layer. Drizzle with some of the olive oil to coat. Sprinkle with garlic powder, onion powder, fresh dill, and Parmesan cheese. Season with salt and pepper.
Toss gently with your hands, adding more olive oil as needed (if it’s too dry), until the bread is nicely coated.
Bake on the center rack for 20-30 minutes, checking at the 15-minute mark- give it a stir. The croutons are ready when they are crisp and golden brown; total bake time will vary based on size.
Once completely cool, store in an air tight container for up to 1 week.
