Ingredients
– 4 russet potatoes, peeled and sliced into 1/4-inch slices (about 2 pounds)
– 1 yellow onion, sliced into rings
– 3 tablespoons butter
– 3 tablespoons all-purpose flour
– 1/2 teaspoon kosher salt
– 2 cups whole milk, room temperature
– 1 1/2 cups shredded sharp cheddar cheese
– Salt and pepper to taste for final seasoning
Instructions
1-First, preheat your oven to 400°F and lightly spray an 8×8-inch casserole dish with nonstick cooking spray. Then, arrange the potato slices and onion rings in the dish, creating alternating layers for that classic texture.
2-Next, in a saucepan, melt 3 tablespoons butter over medium heat. Whisk in 3 tablespoons flour and 1/2 teaspoon kosher salt, cooking for one minute while stirring constantly to form a smooth base.
3-Slowly stir in 2 cups whole milk and cook until the sauce thickens, creating that creamy goodness. Remove from heat and stir in 1 1/2 cups shredded sharp cheddar cheese until it’s fully melted and smooth.
4-Layering and Baking: Pour the cheese sauce evenly over your layered potatoes and onions, then cover the dish with aluminum foil. Bake for 85-90 minutes until the potatoes are tender. For a crispier top, switch the oven to broil and broil until golden brown.
5-Finally, let the dish rest and season with additional salt and pepper to taste before serving. This method ensures a creamy sauce that coats every bite, and for variations, check out our Sweet Potato Greek Moussaka for more potato-based ideas.
Last Step:
Please leave a rating and comment letting us know how you liked this recipe! This helps our business to thrive and continue providing free, high-quality recipes for you.Notes
🥔 Use russet or Yukon Gold potatoes for best texture and sauce consistency.
🔪 Slice potatoes evenly (1/8-1/4 inch) using a mandoline for uniform cooking.
🧊 Prepare the dish a day ahead and refrigerate before baking to enhance flavors and save time.
- Prep Time: 15 minutes
- Cook Time: 1 hour 30 minutes
- Category: Side Dish
- Method: Baking
- Cuisine: American
- Diet: Gluten-Containing
Nutrition
- Serving Size: 1/8 of the dish
- Calories: 346
