Pre-cook the tortellini according to the package directions. Rinse in cold water and set aside.
Steam the carrots until tender. Meanwhile, slice the mushrooms and then chop the tarragon and thyme; set aside. Slice the green onions and chop the red bell peppers; set aside.
Melt the butter in a saucepan until light brown. Add the flour to make a light roux. Slowly add the chicken broth while whisking. Whisk the mixture until it is smooth and creamy.
Bring the mixture to a boil, boiling for 1 minute. Remove from heat and whisk in the sour cream.
Add the carrots and mushrooms to the broth. Fold in the herbs, green onion, and red bell peppers. Add the cooked tortellini and heat on low taking care not to boil.