Preheat the oven to gas mark 5. Scrub the sweet potato clean and then rub with oil and place on a baking tray. Roast for about 50 minutes until soft and cooked through.
2.
Place a frying pan over a medium heat, add a splash of oil and the spinach with a grating of nutmeg. Cook until the spinach has wilted, stirring occasionally until the liquid has evaporated.
3.
Meanwhile crack the eggs into a mixing bowl, season lightly and whisk up. Crumble in half the feta and grate in half of the cheddar.
4.
Remove the pan from the heat and then quickly pour in the egg mixture and give it a good stir, rip in pieces of sweet potato and then break over the remaining feta and grate over the rest of the cheddar. Put the pan in the oven for 13-15 minutes until fluffy.
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