Pre-heat the oven to 375°F.
Heat the oil in a pan. Add all the chopped vegetables into the pan, add a little bit of seasoning (optional) and saute for 2 minutes or just until they start caramelizing. Turn off the heat and keep them aside.
Next, take a mixing bowl. Add the eggs, cream, sea salt, black pepper powder, mixed Italian herbs, red chili flakes, ginger garlic powder, and onion powder. Whisk everything together.
Add in the cheese next into the egg mixture and fold it well
Take a casserole baking dish and grease it with butter
Next, layer the bottom with the prepared vegetables
Pour the egg mixture over the vegetables. Ensure that the egg sips down in between the crevices of the vegetables. You can use a ladle to flatten out the egg mixture.
Top the mixture with some more shredded cheese
Bake for 25-35 minutes, or until the center of the frittata is cooked through at the center. Use a toothpick to check if the center is cooked. It should come out clean.