croutons To make delicious warm toasty croutons, cut up leftover bread into cubes. Fry them in olive oil and spices. My trick is to use olive oil cooking spray to cut down on the calories. Then I add garlic powder (not! garlic salt!), a little season-all, parsley, and a tad of parmesan cheese. Just fry until brown. These tasty morsels freeze well too!