As well as Bayern, who are currently leading the Bundesliga after a blistering start to their campaign, Bolton will take on Red Star Belgrade, who were knocked out of the Champions League in the qualifying stage by Rangers.
The Premier League strugglers' group is completed by Portuguese side Braga and Aris Salonika of Greece.
He told Sky Sports News: "Being greedy you want to play Bayern Munich at home, because you get a better TV deal from broadcasters.
"When you're playing a second-rate team from Macedonia and 20,000 people turn up it probably spells out that people are interested.
"We all said Bayern Munich in the group would be fantastic, so we're all very happy."
Gartside believes facing Bayern could provide a major boost to the Trotters' flagging season under new manager Sammy Lee.
"We've had a tough start," he added.
"You're looking for signs and things which might start your season off and this could be a great fillip for everybody."