Last time I made mine, I tried it a little differently, first of all I tossed my cut sweet potato fries/wedges in a small amount of olive oil which had herbs and spices in it. This gave them a thin coating on them of oil essential which means the outer edges will go crispy (also gave the herbs something to bind to the sweet potato with) I then spread them out in a roasting tin and garnished with some salt and pepper seasoning. The next part was simply to treat them like roast potatoes; Hot oven (mines fan assisted so like 180 - 200 degrees) for 30 - 35 mins.
The tricky part is to get the amount of olive oil right. I did mine with literally a drizzle probably no more than a few tea spoons worth of oil and it was a portion for 3 people so gives some sense of scale to the proportions. The less oil you use, the less soggy they'll come out but not enough oil and you lose the crisping.







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