Make the easiest homemade croutons with the soft centers from these bowls. Preheat oven to 400°. Cut the reserved centers into 1-inch cubes; coat lightly with olive oil cooking spray. Place in a zip-top plastic bag; add 1 tsp. desired dried herbs or seasonings. Seal bag, and shake to coat. Spread bread cubes in a single layer on a baking sheet, and coat again with cooking spray. Bake at 400°, stirring occasionally, 7 to 9 minutes or until lightly toasted. Cool completely. Store in an airtight container for three days.