You can freeze your baked pumpkin blossom cookies for up to 3 months without the pumpkin candies. First, place your cookies on a flat baking sheet and freeze for 20 minutes or longer until they are frozen. Then stack your cookies in a freezer-safe container with parchment paper between layers of cookies. You can add the pumpkin candies with some melted chocolate or frosting to secure it once the cookies have defrosted and just before serving.