Preheat the Oven: Start by heating your oven to 375 degrees, setting the stage for baking.
Combine the Ingredients: In a large bowl, mix the condensed soup, dry soup mix, and melted butter thoroughly.
Prepare the Potatoes: Peel and cut the potatoes into 1-inch pieces, then toss them in the soup mixture to coat evenly.
Assemble in Baking Dish: Transfer the coated potatoes into a 13x9 baking dish, spreading them out evenly.
Bake Covered: Cover the dish with aluminum foil and bake for 30 minutes, allowing the potatoes to become tender.
Continue Baking Uncovered: Remove the foil and bake for an additional 30-45 minutes, stirring occasionally for even cooking.
Add Cheese and Rest: Sprinkle the shredded cheese over the cooked potatoes, cover again, and let it rest, allowing the cheese to melt and the flavors to meld.