Onion, Leek and Apple Soup (Emptying the fridge)

To kick-start the new year and warm you up in these cold temperatures, here's a recipe for onion, leek and apple soup!
Ingredients
- 2 tbsp (30ml) butter
- 5 cups (1.5L) sliced mixed onions
- 2 cups (500ml) chopped leeks
- 1 cup (250ml) French shallots
- 1 cup (250ml) cider or apple juice (optional)
- 1 tbsp. tablespoon (15ml) flour
- 4 cups (1L) mushroom stock (or other stock)
- 1 cup (250ml) grated apple
- 1/2 teaspoon (2.5ml) fresh thyme
- Salt and pepper to taste
Preparation
- In a large saucepan, sweat the onions, shallots and leeks in the butter over a medium heat.
- Leave to caramelise for a long time, stirring often without browning too much.
- Deglaze with the cider (or juice) and allow the liquid to reduce completely.
- Stir in the flour, add the stock, apples, thyme and season.
- Simmer over a low heat for 15-20 mins. Adjust the seasoning.
- Garnish the soup with croutons, cheese and au gratin if desired.