I don't really have one, but I can tell you what I did tonight..
The base for it and my baked mac and cheese, my corn pudding etc.. is always pretty much the same.. milk, butter, eggs.
Tonight I used a single box of frozen spinach (I know, I know, but my spinach isn't big enough to harvest yet..neither is my chard)
1 box of spinach
1 double yolker egg and one regular
a couple of TBS butter
2 big spoonfuls of sourcream
A good handful of mozzarella and one of cheddar
salt and pepper to taste I mixed all of this together (and I cheat and always just mix it in the casserole dish) and added milk enough to make it "loose".
Topped with a sprinkly handful of cheese and some breadcrumbs.
DH was starving so I cheated and threw it in the microwave for 4 minutes first and then let it finish in the oven. If I had not done that I would have baked it covered at 350 until the center was firm and then lid off until the breadcrumbs were crispy, crunchy good.
This "recipe" changes depending on what I have. If I had ricotta that would have been in there. But it works well for any veggie.. brocoli is really good this way too.