Bring first 3 ingredients to a boil in a Dutch oven over med-hi heat. Cover, reduce heat to low and simmer, stirring occ. for 5 min. Increase heat to med-hi; return to a low boil.

Place biscuits on a lightly floured surface. Roll/pat each biscuit to 1/8" thickness; cut into 1/2" wide strips. Drop strips, 1 @ a time, into boiling broth mix. Add carrots and celery. Cover, reduce heat to low and simmer 15-20 min., stirring occ. to prevent dumplings from sticking.