Dice the carrots, celery, and onion. Heat olive oil in a large pot over medium-high heat, add veggies, and sauté for 5 minutes.

Sprinkle flour over the vegetables, stir, and gradually pour in water while stirring to prevent lumps. Cook until thickened.

Cover and bring to a rolling boil, then reduce to a gentle simmer.

Stir in bouillon powder and add spaghetti, cooking uncovered for 9 minutes until tender.

Prepare soy curls and add to the pot, simmer for another 10 minutes until cooked.

Turn off heat and cover; let sit for 5 minutes to meld flavors before adjusting consistency if needed.