I only vaguely remember the main characters because the plotting felt so generic to me. There was that bakery owner, Hope, who's dealing with her mom's Alzheimer's? She goes through her grandmother's old recipe box and finds clues about a past romance during WWII, I think. The grandmother, Rose, is the other main one, with her storyline in occupied France.
Honestly, the characters never really popped off the page for me. Hope's whole journey of self-discovery through baking felt predictable, and the romantic interest, that historian guy, was just a vehicle for exposition. The most interesting bits were about the grandmother's hidden past, but even then, it got overshadowed by the modern-day thread, which was a bit of a slog.