Easy meat-free sausage rolls - Starts at 60

Ingredients

• 1 tablespoon olive oil
• 1 brown onion, finely chopped
• 2 garlic cloves
• 2 teaspoons Vegemite
• Pinch dried chilli flakes (optional)
• 200g button mushrooms, coarsely chopped
• 125g (1 cup) grated sweet potato
• 400g can brown lentils, rinsed, drained
• 2 teaspoons fresh thyme leaves
• 150g colby cheese, cut into 1cm pieces
• 2 sheets frozen puff pastry, just thawed
• 1 egg, lightly whisked