Add in crushed tomatoes, broth, dried basil, onion powder, garlic powder and salt and pepper. Bring to a boil then let simmer for 15 minutes.
From here you can use an immersion blender or a regular blender to smooth out your soup. Feel free to skip this step if using crushed tomatoes and you prefer more texture. Once everything is combined to the texture you like, add in your coconut milk and then stir to combine