Cheesy courgette and corn skillet bake

Ingredients

• 1 medium onion, finely diced
• 100 ml olive oil
• 4 large eggs
• 2 cups courgette, grated (about 4 courgettes)
• 150 g cheese, grated – I used a mix of feta and aged cheddar
• 1 corn cob, kernels removed
• Handful of basil and mint leaves, chopped
• 1 tsp sea salt
• A decent grind of black pepper
• Crème fraîche, sour cream or thick plain yoghurt
• Small handful fresh basil and mint leaves, torn