Potato-Asparagus Casserole

There's no sauce to mask the fresh flavors of the potatoes, asparagus, and onion in this side-dish casserole. From Recipe.com

• Ready In: 1 hr 15 mins
• Serves: 8
• Yields: 1 Casserole

Ingredients

• 1  tablespoon olive oil
• 2 1⁄2 lbs potatoes, peeled and cut into 1/4-inch slices (about 5 large)
• 3⁄4 teaspoon salt
• 1⁄2 teaspoon black pepper
• 2  large onions, chopped
• 1  lb asparagus, ends trimmed and cut into 1-inch pieces
• 4  tablespoons unsalted butter
• 1⁄4 cup parmesan cheese, grated
• 6  slices American cheese

Directions

1. Heat oven to 350°F Spread oil over the bottom of a medium-size baking dish.
2. Arrange potatoes in layers in the baking dish, seasoning each layer with some of the salt and pepper. Scatter onions and asparagus pieces over the potatoes and season with the remaining salt and pepper.
3. Dot with pieces of butter and sprinkle with Parmesan cheese. Cover with foil and bake for 60 to 70 minutes or until potatoes are fork tender.
4. Tear cheese slices into pieces; place on top and allow to melt.