Preheat the oven to 180 degrees / 350 F.
Peel the sweet potatoes and chop them into smaller pieces. Boil them in water until soft, which takes approximately 15 minutes.
Remove the core and seeds from the bell peppers, peel the onion and chop it in half, peel the garlic cloves, and chop the ends of the carrots. Place all the vegetables (except the sweet potato) on a baking paper-lined tray, lightly season with olive oil (I like to use a spray bottle) and bake for 20 to 25 minutes.
Add the boiled sweet potato, baked veggies, garlic chili tom yum paste, unsweetened soy milk, and salt to a high-speed blender. Blend until smooth.
In a large pot, add the creamy sauce, tofu (air fryer tofu optional), and spinach. Mix well.
Garnish with fresh coriander and serve with white rice or sourdough bread.