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Feta & Mushroom Brunch Squares Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.3 from 77 reviews
  • Author: Kimberly
  • Prep Time: 10 minutes
  • Cook Time: 35 minutes
  • Total Time: 45 minutes
  • Yield: 9 squares
  • Category: Brunch
  • Method: Baking
  • Cuisine: Mediterranean
  • Diet: Vegetarian

Description

These Feta & Mushroom Brunch Squares are a savory and satisfying baked egg dish featuring sautéed mushrooms, tangy feta, and optional Parmesan and fresh herbs. Perfect for brunch or a light meal, they combine fluffy eggs with rich flavors in an easy-to-make casserole.


Ingredients

Main Ingredients

  • 1 tbsp olive oil
  • 1 small onion, finely chopped
  • 2 cups mushrooms, sliced
  • 2 cloves garlic, minced
  • 6 large eggs
  • 1/2 cup milk
  • 1/2 tsp salt
  • 1/4 tsp black pepper
  • 1/4 tsp dried oregano
  • 1 cup crumbled feta cheese
  • 1/4 cup grated Parmesan (optional)
  • 1/4 cup chopped fresh parsley or spinach (optional)
  • Cooking spray or butter for greasing the dish


Instructions

  1. Preheat and prepare dish: Preheat your oven to 350°F (175°C) and lightly grease an 8×8-inch baking dish with cooking spray or butter to prevent sticking.
  2. Sauté onions: Heat olive oil in a skillet over medium heat. Add finely chopped onion and cook until translucent, about 3 minutes.
  3. Cook mushrooms and garlic: Add sliced mushrooms to the skillet and sauté until softened and moisture evaporates, approximately 5–7 minutes. Stir in minced garlic and cook for an additional 1 minute. Remove from heat and allow to cool slightly.
  4. Make egg mixture: In a mixing bowl, whisk together the eggs, milk, salt, black pepper, and dried oregano until fully combined.
  5. Combine ingredients: Stir the sautéed mushroom and onion mixture into the egg mixture. Add crumbled feta cheese, grated Parmesan (if using), and chopped fresh parsley or spinach, mixing gently to combine.
  6. Pour and smooth: Pour the combined mixture into the prepared baking dish, spreading and smoothing the top evenly.
  7. Bake: Place the dish in the preheated oven and bake for 30–35 minutes, or until the center is set and the top is lightly golden.
  8. Cool and serve: Let the squares cool for 5–10 minutes before slicing into 9 squares. Serve warm or at room temperature for a delicious brunch treat.

Notes

  • You can substitute the milk with a dairy-free alternative for a lactose-free version.
  • Feel free to customize the herbs; thyme or basil would work well too.
  • Adding chopped spinach increases the nutritional value with extra fiber and vitamins.
  • Ensure mushrooms are cooked well to avoid excess moisture in the squares.
  • These squares can be made ahead and reheated gently in the oven or microwave.