2cupscracker crumbsritz, saltines, or whatever kind you have on hand
Instructions
Run the squash through the food processor until it's in small chunks like pieces of rice. (Don't overwork it, no need to peel or seed)
Salt it lightly and place in a colandar for 30 minutes in the sink to drain out the excess water.
Squeeze the squash down into the colandar as hard as you can with a paper towel covering hte top to squeeze out as much liquid as possible. Squash has a lot of liquid and you don't want a runny casserole.
Cook and stir the onions and butter in a skillet on medium low heat for 4-5 minutes until translucent.
Add flour. Cook and stir 3-5 minutes longer.
Add milk. Whisk and cook until bubbly.
Remove from heat and add mustard, thyme and salt and pepper to taste.
Allow to cool. (The steps from cooking the onion to here can be done while the squash is straining as well)
Whisk in eggs, mayo, parmesan and drained squash.
Mix well and place in two 9 x 13 casserole dishes.
Sprinkle cracker crumbs on top.
Bake at 350 for 30 minutes or until bubbly and slightly browned on top. If you cook it too long, the squash could get soggy.