Preheat your oven to 375°F (190°C).

In a large skillet, heat a drizzle of oil over medium heat. Add chopped onions, zucchini, bell peppers, and spinach, sauté for 5-7 minutes until tender.

In a mixing bowl, whisk together eggs, cream, garlic powder, and herbs until well blended.

Coat a baking dish with oil. Pour in the sautéed vegetables and spread evenly.

Pour the egg and cream mixture over the vegetables, sprinkle with mozzarella and cheddar.

Bake for 30-35 minutes until bubbly and golden on top. A toothpick inserted should come out clean.

Let it cool for 5-10 minutes, then cut into squares and serve warm.