Cheesy squash casserole

Paul deen 

1 TBS vegetable oil 

6 medium squash- I used one huge one, it was super cheese and I deseeded it. 

1 lg Vidalia onion, thinly sliced- I used a half onion

1/2 c grated Parmesan cheese

1 c shredded sharp cheese

1/2 c sour cream 

Salt and pepper to taste 

I sleeve ritz crackers, crushed and drizzled with butter 

Preheat oven to 350. Grease 2 quart casserole dish.

Sauté onion and squash until soft and mix in cheeses. Top with crackers and bake for 20 min.