Including a custom field in Latest Post block

I want to create a recurring campaign showing the upcoming events on our calendar. We use The Events Calendar (StellarWP, formerly Modern Tribe).

Latest Post block nicely shows a list of events, but the event date is missing. Without the event dates, the email is not very useful. The event date is a custom field, not the date the post was published.

Any tips on how I can customise Latest Post block?