Mushroom Wellington - Epicfoodz

Ingredients

• 2 tbsp extra virgin olive oil
• 1 medium leek
• 1 large onion
• 1 large carrot
• 1 rib celery
• 4 cloves garlic
• 2 tbsp tomato paste
• 1 tsp rosemary
• 1 tsp sage
• ½ tsp thyme
• 1 pound mushrooms
• 1½ cans lentils
• 1 cup walnuts
• 2 tbsp soy sauce
• 4 tbsp rolled oats
• 1½ tsp salt
• black pepper as per taste
• 10 to 14-ounce puff pastry sheet