Courgette & corn casserole
Preheat the oven to 200°C/ 400°F/Gas mark 6. Lightly grease a casserole dish with butter.
Sift the potato flour, rice flour and baking powder together.
Put the courgettes, sweetcorn, red pepper, onion and cheese in a large bowl. Stir to mix through evenly. Add the sifted flours, oil and eggs, and mix well using a metal spoon until well combined. Season with salt and pepper.
Pour the mixture into the prepared casserole dish. Bake for 30 minutes or until set in the centre. Serve hot.