Yellow Zuchinni Egg Bake

3 T butter
8 medium yellow squash chopped
1 medium onion
2 large eggs beaten
2 T fresh minced parsley
1 cup sharp cheddar cheese
1 tsp salt
1/2 tsp freshly ground pepper
1 cup crushed potato chips

cook onions in broth until tender. add squash. Mash together. mix other ingrdeients. Pour egg mixture over veggies in a greased dish. Bake at 350 for 20 minutes. top with potato chips and cook 10 more minutes.