Parmesan-Crusted Au Gratin Potatoes and Onion

👨‍🍳 Instructions

1. 1

   {'id': 'step_0', 'step': 1, 'text': '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. 2

   {'id': 'step_1', 'step': 2, 'text': '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. 3

   {'id': 'step_2', 'step': 3, 'text': 'Preheat oven to 400 degrees F (200 degrees C). Butter a 9x13-inch casserole dish.'}

4. 4

   {'id': 'step_3', 'step': 4, 'text': '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. 5

   {'id': 'step_4', 'step': 5, 'text': '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.'}

📊 Nutrition Facts

Per serving (10 servings total)