Layer & Season
Arrange potatoes evenly in the dish, slightly overlapping. Add salt and pepper if using.
Add Beans
Stir the beans, then pour them evenly over the potatoes, spreading to cover.
Bake Covered
Cover tightly with foil and bake for 45–55 minutes, until potatoes are tender and beans are bubbling.
Add Cheese
Remove foil, sprinkle cheddar on top, and return to the oven uncovered for 10–15 minutes until melted and lightly browned.
Rest & Serve
Let the casserole rest for 5–10 minutes before serving, then scoop and enjoy warm.