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 bowl lightly stir 3 eggs to mix; you don’t need to beat them. Add ¾ cup natural yogurt, ¾ cup milk and ½ cup sour cream. 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 with a side salad if you like.
Refrigerate leftovers, covered. Reheat in a medium oven before serving.
Can be frozen, well wrapped.