Summer Squash Cheese Casserole

1 pie crust for 9 inch pie 3 large eggs 1 can sweetened condensed milk (14oz) 1 container ricotta cheese (15oz) 2 tsp. good quality vanilla extract 1 tsp.[...]

2 cups small-curd nonfat cottage cheese or 2 cups low-fat cottage cheese 1 1/2 lbs summer squash (can be yellow, green or a mixture) salt , to taste 1/2[...]