
Creado con IA
Preheat your oven to 350 degrees F (175 degrees C).
In a large mixing bowl, whisk together the eggs, milk, salt, and pepper until well combined.
Heat the olive oil in a large oven-safe skillet over medium heat. Add the diced onions and bell peppers, and sauté until they are soft, about 5 minutes.
Add the chopped spinach to the skillet and cook until it wilts, approximately 1-2 minutes.
Pour the egg mixture over the sautéed vegetables in the skillet. Cook for a few minutes until the edges start to set.
Sprinkle the shredded cheddar cheese evenly over the top of the frittata mixture.
Transfer the skillet to the preheated oven and bake for 15-20 minutes, or until the frittata is set and the cheese is melted and slightly golden.
Remove the skillet from the oven, let the frittata cool for a few minutes, then slice and serve.