Sweet Potato-Lentil Shepherd's Pie From 'Eat Feel Fresh: A Contemporary Plant-Based Ayurvedic Cookbo

Ingredients

• 4 medium sweet potatoes
• 1 tbsp olive oil
• 1/2 cup diced onions
• 1/2 cup diced celery
• 1/2 cup diced carrots
• 3 cloves garlic, minced
• 4 1/2 cups prepared brown lentils
• 2 15 oz cans diced tomatoes
• 2 tbsp tamari or coconut amigos
• 1 tbsp basil + more for garnish
• 1/2 cup chopped spinach
• 2+ tbsp non-dairy milk
• Sea salt and black pepper, to taste