Bring a small pot of water to a boil. Prepare orzo according to package directions. Drain and set aside.
While the orzo is cooking prepare the rest of the soup. Warm 1 Tablespoon olive oil in a large pot over medium low heat.
Add onions and sauté for 5 minutes.
Add carrots and celery and sauté 5 minutes more.
Add garlic and stir quickly to prevent burning.
Add vegan ground meat and allow to brown for up to 5 minutes.
Add sliced mushrooms and stir well.
Add the thyme.
Pour the broth over the vegetables, stirring and scraping up any browned bits from the bottom of the pan.
Increase heat to medium high and bring to a boil. Reduce to a low simmer and cover with a lid. Allow to simmer while orzo finishes cooking.
When carrots are fork tender add the drained orzo to the soup. Allow to simmer for 5 more minutes so that the orzo can absorb the flavor of the broth.