Jammie Dodgers, sometimes Jammy Dodgers, were biscuits filled with jam. The Eleventh Doctor fooled the Daleks into thinking one was a self-destruct button for the TARDIS. When the Daleks discovered his deception, he ate the Jammie Dodger. (TV: Victory of the Daleks)
The Doctor searched his jacket pockets for a Jammie Dodger while on Base Diana, but didn't find one. (PROSE: Apollo 23)
The Doctor once sorted out a dispute between the Pug Ugly gang and the Dead Rabbit gang in New York City in 1829 by settling it over a pack of Jammie Dodgers. (PROSE: The Forgotten Army)
The Doctor once ate or removed all the Jammie Dodgers in a biscuit tin when bringing brothers David and Jack Kershaw together, though the seal on the tin was never broken. (PROSE: Snowfall)
The Doctor asked the Conways if they had any Jammie Dodgers while he, Amy Pond and Rory Williams were on their farm. He stated that he always liked a Jammie Dodger. Sadly, the Conways did not have any. (PROSE: Heart of Stone)
The Doctor asked for twelve Jammie Dodgers and a fez while in the White House. Canton Everett Delaware III did not take kindly to his trivial whims and his request was denied. (TV: The Impossible Astronaut)
While making tea in Alex's flat, the Doctor asked if there were any Jammie Dodgers. (TV: Night Terrors)
The Doctor made Clara a plate of Jammie Dodgers, and took a bite out of one. (TV: The Bells of Saint John)
Amy Pond gave Jammie Dodgers to inhabitants of Verticulus as Halloween treats. (COMIC: Wholloween)
Behind the scenes
Despite being referred to as one, the biscuit the Eleventh Doctor threatens the Daleks with in Victory of the Daleks is not actually a Jammie Dodger brand biscuit. It more closely resembles a Fox's Biscuits jam ring cream, which looks similar to a Jammie Dodger but contains custard cream filling as well as jam, and a circular hole in the centre instead of the heart-shaped one that a Jammie Dodger features.