We didn't have any fennel, so I used some onion...which all 4 of us love. Also, I used cubed hashbrowns instead of the yukon golds...because I had them & didn't have time to cook the "real" potatoes! The kids (ages 3 & 4.5 years) loved this...well, they are Russian & LOVE their potatoes, onions and celery! Throw in chicken and ripe olives & it's a GREAT kid meal here! Thanks for a YUMMY recipe!