Cheese and Onion Pie

This is the third pie I made in my pie a week challenge. Cheese and Onion pie is what I make when I'm craving a cheesy pie but have vegetarians over and can't make a cheesy chicken pie. Considering I have vegetarians over at least once a week, I've gotten pretty good at this. The fun thing about this supper pie is you can use whatever cheeses and onions you like! You can also serve it with whatever gravy you and yours like best, I generally serve this with a veggie gravy, but you could use beef or chicken gravy instead.