Break the eggs over the mixture, stir to combine, and season with salt and pepper.
5 eggs, salt and pepper
Transfer to the baking dish, top with the remaining mozzarella, and bake for 30 minutes until golden.
NOTES
1. BroccoliYou can also replace the broccoli with cauliflower or finely chopped white cabbage. Or add more vegetables. Think of small cubes of carrot, zucchini, or half cherry tomatoes. Fry them together with the broccoli for even more flavor.2. MozzarellaBuffalo mozzarella is the best. If you can't get it, you can also use regular mozzarella (from cow's milk). Do you want a stronger cheese taste? Replace the mozzarella with cheddar cheese.3. Lactose-freeReplace the mozzarella with vegan mozzarella (now widely available in the supermarket) for a lactose-free frittata.4. Baking dish sizeI used a 6 x 10-inch baking dish. But is your baking dish just a little bigger or smaller? That is not a problem at all. With a larger baking dish, your frittata will be a bit thinner. Make sure to shorten the oven time by a few minutes.Do you have a smaller baking dish? Then use four eggs. And bake the frittata in the oven for the same amount of time. Or you adjust the ingredients in the recipe. You can do that easily at the top of this recipe card.5. StorageYou can keep frittata leftovers and reheat or eat it cold. Always make sure that you cool the frittata quickly and then pack it airtight.
Refrigerator: Store in the refrigerator for up to 2 days.
Freezer: Freeze the frittata for up to 2 months. Let it thaw in the refrigerator and then eat. You can also heat it for another 10 minutes at 320 °F (ca. 160°C). This way you can make this frittata in advance.
Tip: And if you don't feel like a piece of frittata? Then cut it into small pieces and mix with some mayonnaise. You'll get a great egg salad for your sandwich!