Savory Spinach and Mushroom Egg Casserole is your go-to dish for a hearty breakfast or brunch that’s both easy to prepare and incredibly satisfying. Packed with fresh veggies and creamy cheeses, this casserole brings comfort to any table with minimal fuss.
Eggs form the base of this casserole, providing protein and a fluffy texture. The addition of whole milk makes the eggs creamy and rich, while salt and black pepper enhance the overall flavor. Olive oil is used to sauté the vegetables, bringing out their natural sweetness.
Spinach adds a pop of color and a dose of vitamins. Mushrooms bring an earthy flavor that pairs beautifully with the savory elements. Onion adds a mild zing, creating a deeper flavor profile. Feta cheese contributes a tangy creaminess, and parmesan cheese gives a nutty, savory finish.
This casserole pairs beautifully with a light side salad or a slice of crusty bread. For a brunch spread, consider adding fresh fruit or a yogurt parfait to balance the savory flavors.
First, get your oven preheating to 350°F (175°C). While it warms up, lightly grease a 9x13-inch baking dish to ensure your casserole doesn’t stick. In a large bowl, whisk together the eggs, milk, salt, and pepper until they're nicely blended. Set this aside for a moment.
Next, grab a skillet and heat up the olive oil over medium heat. Toss in the diced onions and let them sauté until they’re translucent and fragrant, about 3 minutes. Add in the mushrooms and cook them until they release their moisture and start to brown, around 5 minutes. Stir in the spinach and cook just until it's wilted, which should only take about 2 minutes. Once done, remove the skillet from the heat.
Spread the sautéed vegetables evenly over the bottom of your prepared baking dish. Pour the egg mixture over the top, making sure it covers everything. Sprinkle the crumbled feta and grated parmesan over the eggs.
Slide your dish into the preheated oven and bake for 35-40 minutes. You’ll know it’s ready when the eggs are set and the top is a lovely golden brown. Let it cool just slightly before slicing and serving.
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