- 2 tbsp olive oil
Probably the most widely-used oil in cooking, olive oil is pressed from fresh olives. It's…
- 1 onion, chopped
Onions are endlessly versatile and an essential ingredient in countless recipes. Native to Asia…
- 1 tbsp golden caster sugar
- 250g chestnut mushrooms, cleaned and thinly sliced
- 1 garlic clove, crushed
- 3-4 tbsp thyme leaves, finely chopped
- butter, for spreading
Butter is made when lactic-acid producing bacteria are added to cream and churned to make an…
- 12 slices of thin sliced white sandwich bread
- 100g grated Gruyère or cheddar, for sprinkling
Gruyère is an undoubted pinnacle of traditional Swiss cheese-making, a culinary masterpiece as…
Heat the oil in a generous frying pan, add the onion and fry over moderate heat for about 7 mins until soft and golden. Stir in the sugar and seasoning, turn up the heat and add the mushrooms. Sizzle for 5 mins until you have driven off any moisture and the mushrooms are golden. Stir in the garlic for a few further mins, until fragrant, then turn off the heat and stir in most of the thyme (save some for sprinkling). The mushroom mix can be chilled at this point.
To make the tartlet bases, cut 7-8cm circles out of the bread using a cookie cutter or glass. Butter one side and stick buttered-side down into a 12-hole tartlet tin. Freeze any leftovers to make breadcrumbs.
When ready to bake, heat oven to 220C/200 fan/gas 7. Divide the mushroom mixture between the tartlets and top with a sprinkle of cheese. Don’t be too tidy about this – any cheese on the tin will form a lacy edge to the tartlets. Bake for 10-15 mins until golden and bubbling. Sprinkle over the reserved herbs and serve.