- Preheat oven to 400ºF and line a baking sheet with parchment paper. Melt 2 tablespoons of vegan butter over medium heat in a large sauté pan. Add celery, carrots and onion. Sauté for 10 minutes, stirring occasionally.
- Add garlic, mushrooms and cauliflower to pan and continue to cook for 5 minutes longer.
- Melt remaining 2 tablespoons of butter in pan and then turn off heat and stir in pecans, panko bread crumbs, dried herbs, salt and pepper. Stir well to incorporate bread crumbs.
- Pour stuffing evenly on baking sheet. Bake for 12-15 minutes, until panko is golden brown. Transfer to a serving platter or bowl and enjoy hot.