Lentil Shepherds Pie with Sweet Potato Mash

Ingredients

• 1 1/3 cup red lentils
• 1 Tbsp vegetable oil
• 1 medium red onion, diced
• 3 cloves garlic, minced
• 1 1/3 cup frozen peas
• 1 ½ cup mushrooms, sliced
• 3 medium carrots, chopped
• 1 celery stalk, chopped
• 1 small leek, sliced finely
• 1 tsp dried or fresh oregano
• 1 tsp dried or fresh thyme
• 1 tsp dried or fresh rosemary
• 1 tsp dried or fresh parsley
• 1 tsp dried basil
• 1 tsp dried mixed herbs
• ½ tsp ground cinnamon
• ¼ tsp ground turmeric
• 1 Tbsp tomato puree
• ½ cup passata or chopped tomatoes
• 2 Tbsp balsamic vinegar
• ½ tsp salt
• Pepper to your taste
• 2 large sweet potatoes, cut in chunks
• ¼ cup plant based milk
• 2 Tbsp nutritional yeast