Baking Time Conversion

[Temecula1]

I have an egg/cheese based recipe that makes too much to eat. It calls for a 9X13" baking dish and cooking time of 15 minutes at 400 then 35 additional minutes at 350. If I cut the ingredients to 60% of each item and use a 7X11" baking dish, how much do I cut the baking time or temperature?

 

[PrincessFiona60]

The cooking time and temperature should remain the same.