Vegan Cauliflower Walnut Bolognese

Name: Vegan Cauliflower Walnut Bolognese
Prep time: 15 min
Cook time: 1 h
Total time: 1 h 15 min
Cuisine: Italian
Ingredients: 450 g cauliflower; 100 g walnuts; 1/4 cup nutritional yeast; 1 teaspoon garlic powder; 1 teaspoon onion powder; 1/2 teaspoon black pepper; 3 carrots; 1 celery stalk; 1 white onion; 2 garlic cloves; 1 teaspoon dried oregano; 1 teaspoon dried basil; 1/2 tablespoon tomato paste; 800 ml canned whole peeled tomatoes (2x400 ml ); 200 ml water; 1 teaspoon salt; 1 teaspoon sugar; 350 g pasta