Add the cauliflower florets and walnuts to a food processor and pulse until crumbly. Set aside.
2. Step
Heat a drizzle of olive oil in a large saucepan over medium heat. Once the oil begins to shimmer, add the onion and cook for 3-4 minutes, until semi-translucent. Add the cauliflower mixture and cook for 4-5 minutes, until the cauliflower is semi-tender.
3. Step
Add another drizzle of olive oil, the garlic, chili powder, cumin, paprika, and soy sauce and cook for 2-3 minutes more, until the spices are fragrant. Add the vegetable broth and cook for another 5-6 minutes, until the broth has evaporated and the cauliflower is tender. Season with salt and pepper to taste.
4. Step
To assemble a burrito, add ¼ of the Spanish rice, ¼ of the cauliflower-walnut mixture, some lettuce, tomatoes, vegan cheese, and guacamole to the center of a tortilla. Fold in the sides and roll up, keeping the filling tucked in place. Repeat with the remaining ingredients. Cut in half and serve.
