Easy 1-Pot Tomato Soup (Vegan)

Name: Easy 1-Pot Tomato Soup (Vegan)
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Cuisine: American, Mediterranean
Ingredients: 2 tsp olive oil ((if oil-free, sub twice the amount in water, plus more as needed to prevent sticking)); 1 ½ cups diced yellow onion ((1 large onion yields ~1 ½ cups or 240 g)); 1-2 cloves garlic, minced; 1 tsp dried basil; 1 (28-ounce) can whole peeled San Marzano tomatoes, in juices; 1 (6-ounce) can tomato paste; 1 (14.5-ounce) can diced tomatoes; 1 cup vegetable broth ((sub up to half with extra coconut milk for creamier soup)); 1 (14-ounce) can light coconut milk ((or sub full-fat for creamier soup)); 3/4 tsp each sea salt and black pepper; 1-2 Tbsp maple syrup; Vegan parmesan cheese; Freshly chopped basil; Croutons ((see notes for homemade // use gluten-free if needed))