Caramelized Onion Frittata is a delicious and savory dish that is perfect for breakfast, brunch, or even dinner. The sweet and rich flavor of caramelized onions pairs perfectly with the creamy and fluffy eggs. This frittata is easy to make and requires only a few simple ingredients. It is a versatile dish that can be served hot or cold, making it great for meal prep or entertaining. Enjoy this flavorful and satisfying frittata on its own or with a side of salad or crusty bread.