Conjure Minor Nutrients

Six portions of raw, healthy vegetables appear in a container you are touching, or in your hand and are infused with magic for the duration. A creature can eat one portion as a Bonus Action gaining 1d4 to Constitution saving throws for 1 hour, and provides enough nourishment to sustain a creature for one day.

 A creature can only benefit from one portion at a time, and uneaten portions vanish after 8 hours.

When you cast this spell using a spell slot of 2nd level or higher, it creates two additional portions of nutrients for each slot level above 1st.
The duration before the food vanishes also increases by 4 hours per level above 1st.