Welcome to my kitchen! Today, we're diving into a recipe that's perfect for brunch, lunch, or even a cozy dinner: Savory Spinach and Mushroom Hash Brown Casserole. This dish combines comfort food vibes with a nutritious twist, making it a versatile favorite for any occasion.
Butter sets the stage by adding richness and helping to sauté the onions until they're sweet and translucent. Onion adds a base layer of flavor that enhances the entire dish. Spinach is our nutrient powerhouse, providing a pop of color and vitamins. Mushrooms bring an earthy depth that complements the other ingredients beautifully. Frozen hash browns make this dish incredibly convenient, providing a crispy contrast to the soft veggies. Eggs bind everything together while adding protein. Whole milk keeps the casserole creamy without being too heavy. Salt and black pepper are the essential seasonings that bring all the flavors together. Finally, cheddar cheese melts into a golden, bubbly topping that’s irresistibly gooey.
This casserole pairs beautifully with a fresh arugula salad tossed in a light vinaigrette. For a heartier meal, serve it alongside grilled sausages or a simple roasted chicken. If you’re hosting brunch, a fruit salad with berries and mint would be a delightful complement.
First things first, preheat your oven to 375°F and make sure to grease up a 9x13 inch baking dish. This helps prevent sticking and makes for easy cleanup later. Next, grab a skillet and melt the butter over medium heat. Toss in the onion and let it sauté until it turns translucent; this should take about 5 minutes. You want it to be soft and aromatic.
Once your onions are ready, add the spinach and mushrooms. Cook them until the spinach wilts and the mushrooms become tender. This usually takes another 5–7 minutes. If your mushrooms release a lot of water, just cook them a bit longer so it evaporates.
Spread the hash browns evenly in your prepared baking dish. They form the crispy base for our casserole. Now, layer the spinach and mushroom mixture over the hash browns. Make sure it’s evenly distributed for balanced bites.
In a medium bowl, crack open the eggs and whisk them together with the milk, salt, and pepper. Pour this mixture over the veggies, ensuring everything is nicely covered. Finally, sprinkle the cheddar cheese on top. Pop the dish into the oven and bake for 35-40 minutes. You'll know it's ready when the eggs are set and the cheese is golden brown. Let it cool slightly before serving to allow the flavors to meld.
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