Spinach and feta triangles are a popular appetizer in Mediterranean cuisine. With the help of Thermomix, you can easily prepare these delicious bite-sized treats. The Thermomix will assist you in chopping the spinach and onions, mixing them with feta cheese and herbs, and folding the phyllo pastry into triangles. The result is a crispy and flavorful appetizer that is perfect for parties or as a snack.