Crustless Brie, Vegetable and Egg Bake

Bahan-bahan (8 porsi)

• 5 cups vegetables ((I used broccoli, zucchini, mushrooms, onion and yellow bell pepper))
• 1 tablespoon butter or olive oil
• 8 ounces brie, (rind removed and torn into small chunks)
• 10 large eggs
• 6 large egg whites ((see tips below))
• 2 tablespoons milk or white wine
• 1 tablespoon Dijon mustard
• salt and pepper, (to taste)