In a medium non-stick saucepan, saute onion in olive oil until soft (about three minutes). Add garlic and saute one minute more.
Add broth, grated carrots, salt, and pepper. Bring to a boil. (Add dried basil at this time if you aren't using fresh.)
Add orzo. Cover, reduce heat and simmer about 15 minutes, stirring occasionally, until orzo is tender.
Remove from heat; stir in zucchini, cheese, and fresh basil if you are using it. Cover and let stand 2 minutes.
Notes
BROTH: If I use a commercially prepared vegetable broth, I omit the salt. If I use a homemade one, I dilute it dramatically so that the broth flavor doesn't overpower the other vegetables.
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