King oyster mushroom filo tart

Name: King oyster mushroom filo tart
Ingredients: 400g/14oz butternut squash, diced; splash olive oil; 2 shallots, finely sliced; 2 garlic cloves, crushed; 2 tsp turmeric; 1 tsp ground cumin; 1 tsp garam masala; ½ tsp cinnamon; ½ tsp curry powder; 2 portobello mushrooms, shredded; 2 large king oyster mushrooms, shredded; 150g/5½oz baby spinach; 15g/½oz bunch coriander, leaves picked and roughly chopped; 100g/3½oz feta, crumbled; salt and ground black pepper; 3 sheets filo pastry, plus extra for patching; 50g/1¾oz unsalted butter, melted; 25g/1oz whole almonds, chopped