Best Orange Dal with Sweet Potatoes and Spinach Recipe

Name: Best Orange Dal with Sweet Potatoes and Spinach Recipe
Ingredients: 2 tablespoon extra-virgin olive oil (or coconut oil); 1 medium sweet potato, peeled and diced; 1/2 yellow onion, thinly sliced; Salt and pepper to taste; 3 cloves garlic, minced; 2 teaspoons grated ginger; 1 1/2 teaspoons curry powder; 1 1/2 teaspoons cumin; 1 teaspoon coriander; 1 teaspoon turmeric; 1/2 teaspoon cinnamon; 1 (15-ounce) can chopped tomatoes with juices; 1 cup small orange lentils*; 2 cups water; 4 cups baby spinach; 3 tablespoons chopped cilantro, plus more for serving; Lemon wedges, for serving; Yogurt, for serving