01 -
Preheat oven to 350°F (175°C).
02 -
Grease a 9x13-inch baking dish.
03 -
In a large bowl, mix sour cream, milk, butter, and French onion soup mix.
04 -
Layer the sliced potatoes in the prepared baking dish.
05 -
Pour the sour cream mixture over the potatoes, ensuring they are well-coated.
06 -
Cover with aluminum foil and bake for 45 minutes.
07 -
Remove the foil, sprinkle with shredded cheddar cheese, and bake uncovered for an additional 15 minutes, or until potatoes are tender.
08 -
Serve hot and enjoy the creamy, cheesy goodness!.