Get ready to transform your ordinary dinner into an extraordinary culinary experience with this mouthwatering Potato and Onion Casserole! Imagine layers of creamy, tender potatoes and sweet caramelized onions, melted together with rich, gooey cheese - this isn't just a side dish, it's a flavor explosion that will have your family begging for seconds. Whether you're looking for the perfect comfort food or a crowd-pleasing accompaniment to your main course, this recipe is about to become your new go-to kitchen favorite.
Prep Time: 15 mins
Cook Time: 50 mins
Total Time: 1 hrs 5 mins
Cuisine: American
Serves: 4 servings
Ingredients
- 4 large potatoes, sliced
- 2 onions, sliced
- 1 cup shredded cheese
- 1 cup milk
- Salt and pepper to taste
- 1 tablespoon butter
Instructions
- Preheat the oven to 375°F (190°C). Grease a 9x13 inch baking dish with butter to prevent sticking.
- Wash and thinly slice the potatoes using a sharp knife or mandoline, aiming for uniform 1/8-inch thick slices. Peel and slice the onions into thin rings.
- Layer the bottom of the baking dish with a thin layer of sliced potatoes, slightly overlapping each slice to create an even base.
- Sprinkle some sliced onions over the potato layer, then season with salt and pepper. Repeat layering potatoes and onions, seasoning each layer.
- In a separate bowl, whisk together milk and half of the shredded cheese until well combined.
- Pour the milk and cheese mixture evenly over the layered potatoes and onions, ensuring it seeps between the layers.
- Dot the top layer with small pieces of butter and sprinkle the remaining cheese over the casserole.
- Cover the baking dish with aluminum foil and bake for 35 minutes to allow potatoes to become tender.
- Remove the foil and continue baking for an additional 15 minutes until the top is golden brown and cheese is melted and slightly crispy.
- Remove from oven and let the casserole rest for 10 minutes before serving to allow the layers to set and cool slightly.
- Serve hot as a side dish, garnishing with fresh chopped herbs like parsley or chives if desired.
Tips
- Slice Uniformly: Use a mandoline or sharp knife to create even potato slices, ensuring consistent cooking and a beautiful layered presentation.
- Season Each Layer: Don't be shy with salt and pepper - seasoning between layers builds depth of flavor throughout the casserole.
- Choose the Right Cheese: While the recipe calls for shredded cheese, experiment with varieties like gruyère, sharp cheddar, or a blend for different flavor profiles.
- Prevent Burning: The aluminum foil in the first baking stage helps steam the potatoes and prevent the top from browning too quickly.
- Let It Rest: The 10-minute resting period isn't optional! It allows the casserole to set and makes serving much easier.
- Make It Ahead: This casserole can be prepared earlier in the day and refrigerated, then baked when you're ready to serve.
- Customize: Add crispy bacon bits, chopped herbs, or swap some potatoes for sweet potatoes to make the recipe your own.
Nutrition Facts
Calories: 280kcal
Carbohydrates: 35g
Protein: 10g
Fat: 12g
Saturated Fat: 7g
Cholesterol: 35mg
