Have ready roasted vegetables or other add-ins (see Notes, below)
Preheat oven to 350°F (180°C).
Oil or butter an 8-inch ceramic or glass dish and dust with fine dry breadcrumbs.
In a medium bowl, lightly stir 3 eggs to mix; you don’t need to beat them. Add ¾ cup natural yogurt or heavy cream, ¾ cup milk and ½ cup sour cream or cream cheese. Mix until it’s smooth, but don’t beat.
Season with ½ teaspoon salt , ⅛ teaspoon ground black pepper and 2 tablespoons fresh herbs. You can add a dash of something spicy like jalapeño powder or smoked paprika.
Add ½ cup grated cheese and mix.
Put 2 ½ cups roasted vegetables in the prepared dish. You can cut them into bites, leave them whole or create a pattern. Carefully pour the binding cream over, covering the whole surface. Some vegetables might pop to the surface; that is fine.
Bake for about 45 minutes, or until the center is set but be careful not to overbake it. It will be golden and might have risen a bit.
Serve hot, warm or at room temperature, with a side salad if you like.
Keep leftovers covered in the refrigerator for up to 3 days. Reheat in a low oven or the microwave. It can be frozen, well wrapped or in a freezer-safe container.