Creating a delicious frittata is straightforward if you follow these simple steps:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Whisk Eggs: In a large bowl, whisk together the eggs and milk until well combined. Season with salt and pepper.
3. Prepare Ingredients: Chop your chosen vegetables and meat, and set them aside.
4. Sauté Vegetables: In an oven-safe skillet, heat olive oil or butter over medium heat. Add the diced vegetables and sauté for 5-7 minutes until softened.
5. Add Meat: If using, stir in the cooked meat and cook for an additional 2-3 minutes.
6. Combine Mixtures: Pour the egg mixture over the sautéed vegetables and meat. Gently stir to combine.
7. Add Cheese: Sprinkle cheese over the top of the egg mixture.
8. Cook on Stovetop: Allow the frittata to cook on the stovetop for 3-5 minutes until the edges begin to set.
9. Transfer to Oven: Carefully transfer the skillet to the preheated oven. Bake for 15-20 minutes or until the center is set and the top is golden.
10. Cool and Slice: Remove from the oven, let it cool for a few minutes, then slice into wedges to serve.

These steps will guide you through the process of creating an incredible frittata effortlessly.