Vegan Creamy Pumpkin Tomato Soup without Coconut Milk

Name: Vegan Creamy Pumpkin Tomato Soup without Coconut Milk
Ingredients: 1 small sweet onion - finely chopped; 4 garlic cloves - minced; 1 15 oz can pumpkin puree (not pumpkin pie mix); 1 23 ounce can crushed tomatoes; 4 cups vegetable broth; 1 cup water; 1 cup red lentils; 1 cup basil - finely chopped; 1 tbsp maple syrup; 1 tsp salt + more to taste; 1 tsp black pepper + more to taste; 1 tbsp nutritional yeast