Cascade Bicycle Club is the biggest cycling group, by far, in Washington state.
Here is a link to their free group rides. There are many regular rides (many with interesting acronym names) and several with a scheduled stop. But no pie rides.
Ride series | Cascade Bicycle Club
Pie doesn't (in most places) seem to be a Seattle biggie. Exceptions must abound. Shari's restaurants, bakeries are quite abundant but not a bike ride pie stop destination location. Some of the larger
PYO berry farms have locations suitable for small group cycling stops. Puget Sounders - please prove me wrong. Especially in the Issaquah,Newcastle, Renton area. I better check the XXX 50's soda shop menu. Fresh apple pie season should be upon us.