2cupsshredded cheesepreferably, mozzarella or cheddar
Instructions
Heat oil in a pan on medium-high heat, and saute onions and mushroom until lightly browned. Make sure that no moisture is left from the mushroom and the filing is completely dry.
Mix in oregano and season well with salt and pepper. Set aside and let it come to room temperature.
Preheat oven to 375 and place the mini tart shells on a lined baking sheet.
Beat the eggs in a large bowl, and in the mushroom filling, chopped spinach and crumbled feta. Mix well to combine.
Carefully fill each tart shell with the egg mixture and top with some shredded cheese.
Bake in the preheated oven for 12-15 minutes, until the tart shells and eggs are completely cooked through.