Preheat an oven to 325°F (165°C). Brush 8 individual ramekins or a 3-quart (3-l) baking dish with canola oil.
In a fry pan over medium heat, warm the olive oil. Cook the leeks, stirring, until translucent, 4 to 5 minutes. Stir in the sherry, scraping up the browned bits; simmer until evaporated.
In a saucepan over medium-high heat, bring the cream, garlic, hot sauce and coriander to a simmer. Off the heat, let stand for 5 minutes.
In a food processor, combine the cream mixture, sweet potato puree, the 4 oz. (125 g) cheese, salt and pepper and pulse to combine. Add the eggs one at a time and pulse to combine. Add the leeks and pulse to combine.
Spoon the sweet potato mixture into the prepared ramekins or baking dish. Bake until the potatoes are browned on top and barely jiggle in the center, 20 to 25 minutes for the ramekins and 40 to 50 minutes for the baking dish. Top each portion with scoop of goat cheese and apple-onion jam.