This is like baked ziti, only with potatoes. It may be super easy but it’s also super good.
8 medium russet potatoes, peeled and thinly sliced
1 (25-ounce) jar marinara sauce
2 (8-ounce) packages grated mozzarella cheese
Preheat oven to 350 degrees. Lightly grease a 9 x 13-inch baking pan.
Place a thin layer of sauce across bottom of pan. Top with a layer of potatoes, then sauce, then cheese. Repeat twice more. Bake for about 45 minutes, until potatoes are soft and cheese is browning and bubbling.