Time of Day Sensor Attribute Template Help

Given a Time of Day Helper, and a simple Entity card, how would one go about templating the output of the attribute next_update?

I have the format figured out, I just can’t figure out how to apply it to the attribute to show up on a card.

{{ as_timestamp(state_attr('binary_sensor.on_schedule', 'next_update')) | timestamp_custom('%-I:%M %p') }}

Card Config

Current Output

Most core cards do not allow templating. You can switch to a different card type or set up a Template sensor so the desired value is available as a state.