Ways to improve readability of recipe ingredients?

I am building a recipe website and I'm trying to improve the readability and scannability of the ingredient lists. I've tried a bunch of different options but I'm not sure what is best.

Here are some styles I've tried

No formatting:

  • 1 pound skinless, boneless chicken breast halves - cubed
  • 1 cup sliced carrots
  • 1 cup frozen green peas
  • ½ cup sliced celery
  • ⅓ cup butter
  • ⅓ cup chopped onion

Bold amounts:

  • 1 pound skinless, boneless chicken breast halves - cubed
  • 1 cup sliced carrots
  • 1 cup frozen green peas
  • ½ cup sliced celery
  • ⅓ cup butter
  • ⅓ cup chopped onion

Bold numbers:

  • 1 pound skinless, boneless chicken breast halves - cubed
  • 1 cup sliced carrots
  • 1 cup frozen green peas
  • ½ cup sliced celery
  • cup butter
  • cup chopped onion

Almost every cookbook/website I've looked at follows the 'no formatting' style. Is that really the best option?