Baked Potato & Onion Casserole Recipe
If you’re craving comfort food that feels like a warm hug, the Baked Potato & Onion Casserole is exactly what you need on your dinner table. This rustic dish brings together tender slices of potato mingling beautifully with sweet, caramelized onions, all baked to a golden perfection. The simplicity of the ingredients allows their natural flavors to shine, creating a cozy, satisfying casserole that’s perfect for any occasion. Once you try this Baked Potato & Onion Casserole, it might just become your new go-to dish for family dinners or casual gatherings.
Ingredients You’ll Need
Getting the ingredients right is the key to nailing this dish. Each component plays a crucial role, from the creamy milk that keeps everything moist to the oil that helps achieve that irresistible golden crust. These simple essentials come together to create layers of flavor and texture that will have everyone asking for seconds.
- 4 potatoes, thinly sliced: Choose starchy or all-purpose potatoes for tender slices that bake well without falling apart.
- 1 large onion, sliced: A sweet onion works best to bring out natural caramelized richness during baking.
- 1 cup milk: Adds creaminess and helps the casserole stay moist and tender.
- 2 tbsp oil: Olive oil or a neutral oil is perfect to drizzle on top for a golden, crispy finish.
- Salt and pepper: Essential for seasoning, balancing, and enhancing the natural flavors of the potatoes and onions.
How to Make Baked Potato & Onion Casserole
Step 1: Preheat Your Oven
Start by setting your oven to 375°F (190°C). This temperature is just right to gently cook the potatoes until tender while allowing the onions to caramelize softly without burning.
Step 2: Layer the Potatoes and Onions
In a baking dish, alternate thin slices of potatoes with layers of sliced onions. This layering creates a beautiful texture contrast where the sweet onions peek through the soft potatoes, ensuring each bite is filled with that perfect blend of flavors.
Step 3: Season Generously
Sprinkle salt and pepper evenly between the layers or over the top. This simple seasoning is crucial because it enhances the natural taste of both potatoes and onions without overwhelming them.
Step 4: Add Milk and Oil
Pour the cup of milk evenly over your layered dish, which will help everything stay tender and moist during baking. Then drizzle the oil across the top to encourage a lovely golden crust that adds both flavor and texture to the finished casserole.
Step 5: Bake to Perfection
Place the dish in the oven and bake until the potatoes become tender and the top turns lightly golden, usually around 45-60 minutes. You’ll know it’s ready when you can easily pierce the potatoes with a fork and the aroma of caramelized onions fills your kitchen.
How to Serve Baked Potato & Onion Casserole
Garnishes
Fresh herbs like chopped parsley or chives add a pop of color and a fresh contrast to the warm, earthy flavors. A sprinkle of grated sharp cheese or a dollop of sour cream on top can also elevate the dish beautifully.
Side Dishes
This casserole pairs wonderfully with grilled meats, roasted vegetables, or even a fresh green salad to balance richness with some crispness and brightness. It’s versatile enough to shine as a side or stand boldly as a vegetarian main course.
Creative Ways to Present
Serve the Baked Potato & Onion Casserole in cold-weather bowls straight from the oven or portion it into individual ramekins for an elegant touch. You could also layer it with bits of cooked bacon or sprinkle toasted breadcrumbs on top for added crunch and flavor variation.
Make Ahead and Storage
Storing Leftovers
Leftover casserole can be stored in an airtight container in the refrigerator for up to 3 days. It tastes just as good the next day as the flavors have had more time to meld, making it perfect for meal prep or quick lunches.
Freezing
If you want to keep this meal longer, the Baked Potato & Onion Casserole freezes really well. Wrap it tightly with foil or plastic wrap and keep it in the freezer for up to 2 months. Just thaw overnight in the fridge before reheating.
Reheating
To reheat, place the casserole in a preheated oven at 350°F (175°C) until warmed through, usually about 20-25 minutes. This method helps maintain that lovely baked texture and prevents sogginess that might occur with microwaving.
FAQs
Can I use other types of milk?
Yes! Feel free to substitute regular milk with plant-based options like almond or oat milk if you prefer a dairy-free version, though whole milk will give the creamiest result.
Is it necessary to peel the potatoes?
Peeling is optional. Leaving the skins on adds texture and nutrients but make sure to wash them well to remove any dirt.
Can I add cheese to the casserole?
Absolutely! Adding grated cheese between layers or on top before baking gives the casserole a richer, gooey dimension that’s delicious.
How thin should the potato slices be?
Ideally, slice the potatoes about 1/8 inch thick to ensure they cook evenly and become tender by the time the onions are caramelized.
Can I prepare this casserole vegan?
Yes, use plant-based milk and oil, and skip any dairy garnishes to keep it completely vegan while still tasting amazing.
Final Thoughts
There’s something truly special about the humble Baked Potato & Onion Casserole that makes it a standout comfort dish. Its simple ingredients come alive with thoughtful layering and baking, producing a meal that’s both satisfying and heartwarming. I encourage you to try making this casserole soon and savor every golden, tender bite. You might just find yourself reaching for this recipe time and time again.
