Ingredients
Instructions
- Place one layer of sliced potatoes on bottom of 9 x 13 inch casserole dish.
- Cut butter into pieces and dot potatoes with 1/3 of butter.
- Top with 1/3 diced onion evenly distributed.
- Sprinkle with 1 tablespoon of flour, salt and pepper.
- Repeat two more times for a total of 3 layers.
- Top with can of condensed (undiluted) cream of mushroom soup, spread evenly.
- Cover and cook at 350º for 45 minutes to 1 hour.