Squash Gratin

Summer squash are available now.  A simple au gratin is easy and  hard to beat.

Saute 2-3 lbs of squash and one sliced onion in butter or oil.

Mix in 4 oz grated Gruyere 

4 oz grated Cheddar

2 oz grated Parmesan

Place in gratin dish and drizzle 1/4 cup of cream over the top

Bake at 400 until brown on top.

I added some Panko near the end of cooking. I dont think it added anything to the dish.

Allow to cool slightly before serving.