Created by Felix4067 on October 16, 2012
Step 1: Place potato slices, onion and salt in a large pot; cover with water and bring to a boil.
Step 2: Reduce heat to medium-high, cover and simmer for 15 minutes, stirring occasionally.
Step 3: When potatoes are tender; drain mixture well.
Step 4: Preheat oven to 375F; grease a large casserole dish.
Step 5: Place 1/3 of the potato-onion mixture in bottom of prepared casserole dish; drizzle with 1/3 of dressing and sprinkle with 1/3 of Parmesan. Repeat layers until all ingredients are gone.
Step 6: Cover casserole and bake at 375F for 20 minutes; uncover and continue baking an additional 10 minutes.