Lentil Soup recipe at DesiRecipes

Ingredients

• 1 tablespoon olive oil
• 4 leeks( a form of green-onion) (white and light green parts), cut into 1/4-inch-thick half-moons
• 1 28-ounce can whole tomatoes, drained
• 2 sweet potatoes, peeled and cut into 1/2-inch pieces
• 1 bunch kale( a form of cabbage), thick stems removed and leaves cut into 1/2-inch-wide strips
• 1/2 cup brown lentils
• 1 tablespoon fresh thyme
• Salt and black pepper
• 1/4 cup grated Parmesan (1 ounce, optional)