Cottage Pie with Leek & Cauliflower Cheese - Lucy & Lentils

Ingredients

• 1 tsp olive oil
• 2 carrots (finely diced)
• 1 red onion (finely diced)
• 1 red pepper (finely chopped)
• 350 g mushrooms (finely chopped)
• 3 cloves garlic (minced)
• 4 tbsp tomato purée + 150ml water
• 1 tsp tamari (sub for soy sauce or Worcestershire sauce)
• 1 tsp dried sage
• 1 tsp dried thyme
• Leek & Cauliflower cheese topping:
• 1 small head cauliflower (into florets)
• 1 leek (diced)
• 2 tbsp vegan butter
• 200 ml oat/ almond milk
• 100 g vegan grated cheese
• 1 heaped tbsp cornflour