Preheat the oven to 180 degrees C

Place the sliced peppers, onion and courgette on a large baking dish

drizzle with the olive oil and turning with a spoon to ensure even coating

Place in the oven for around 20 minutes

Meanwhile, crack the eggs in a bowl and whisk together

Add the cream, herbs and salt and pepper stir well

When the vegetables are ready melt the butter in a large skillet

Add the the vegetables and the olives and pour in the egg and cream mix

On a medium heat keep allowing the egg liquid underneath as the frittata cooks

When it is quite cooked turn on the grill in the oven to maximum

Sprinkle cheese on top

Place the pan under the grill and watch the cheese melt and the top brown slightly

Serve immediately