Vegie Frittata

Ingredients

• 1 teaspoon vegetable oil
• 1 medium onion, sliced
• 500g sweet potato, peeled and thinly sliced
• 1/4 cup water
• 420g can sweet corn kernals (or 1 corn cob, cooked)
• 2 cups broccoli, cut into florets
• 60g grated reduced fat cheddar cheese or 30g grated Parmesan cheese
• 6 eggs
• 1/2 cup low fat milk