Name: Parmesan-Crusted Au Gratin Potatoes and Onion
Prep time: 25 min
Cook time: 25 min
Yield: 10
Ingredients: Russet potatoes, cut into 1/4-inch slices - 4 pounds; Salt and ground black pepper to taste - 4 pounds; Butter - 6 tablespoons; All-purpose flour - 6 tablespoons; Whole milk - 1 ½ cups; Heavy whipping cream - 1 cup; Shredded mild Cheddar cheese - 2 ½ cups; Shredded Asiago cheese - 1 cup; Sweet onion, sliced into rings - 1; Sliced green onions - ¾ cup; Shaved Parmesan cheese - ⅓ cup; Buttery round crackers (such as Ritz®), crushed - 7; Chopped fresh parsley - 2 tablespoons

Ingredients for - Parmesan-Crusted Au Gratin Potatoes and Onion

1. Russet potatoes, cut into 1/4-inch slices 4 pounds

2. Salt and ground black pepper to taste 4 pounds

3. Butter 6 tablespoons

4. All-purpose flour 6 tablespoons

5. Whole milk 1 ½ cups

6. Heavy whipping cream 1 cup

7. Shredded mild Cheddar cheese 2 ½ cups

8. Shredded Asiago cheese 1 cup

9. Sweet onion, sliced into rings 1

10. Sliced green onions ¾ cup

11. Shaved Parmesan cheese ⅓ cup

12. Buttery round crackers (such as Ritz®), crushed 7

13. Chopped fresh parsley 2 tablespoons

How to cook deliciously - Parmesan-Crusted Au Gratin Potatoes and Onion

1 . Stage

Place potatoes into a large pot and cover with water; add salt and bring to a boil. Reduce heat to medium-low and simmer until just beginning to soften, 15 to 20 minutes; drain.

2 . Stage

Melt butter in a saucepan over medium heat; add flour and whisk until the mixture thickens, 1 to 2 minutes. Pour milk and heavy cream into the saucepan; cook and stir until smooth, 2 to 3 minutes. Melt Cheddar and Asiago cheese into the butter mixture; cook while stirring continually until the mixture is smooth and creamy, 1 to 2 minutes. Season the sauce with salt and pepper.

3 . Stage

Preheat oven to 400 degrees F (200 degrees C). Butter a 9x13-inch casserole dish.

4 . Stage

Layer about half the sliced potatoes into the bottom of the baking dish. Top the potatoes with sweet onion slices and green onions; pour about 1/3 of the cheese sauce over the onions. Arrange the remaining potato slices into the dish; pour remaining cheese sauce over the potatoes. Sprinkle Parmesan cheese and crushed crackers over the top.

5 . Stage

Bake in the preheated oven until hot in the center and beginning to brown at the edge, about 30 minutes. Sprinkle parsley over the top of the dish to serve.