Combine olive oil and spices. Whisk olive oil, spices, and herbs together until combined.
Toss bread in oil and spice mixture. Place bread cubes in a large bowl. Drizzle olive oil and spice mixture over the bread cubes and toss to coat the bread. Spread seasoned bread cubes in an even layer onto sheet pan.
Bake and cool. Bake at 375 for about 12 minutes, or until bread cubes start to brown. Once you remove them from the oven, allow them to cool and crisp up for a few minutes on the sheet pan.
Bread cubes: You don't need precisely 4 cups of bread cubes! Use up what you have, or choose the amount of croutons you'd like to make, and adjust the olive oil and spices accordingly.
Bread substitutions: Remember you don't need to use a baguette! I've just been super into them lately, so have them on hand every week. Feel free to use whatever bread needs using up in your household, or simply your favorite type of bread. Sourdough, anyone??