1. First, make the sauce. In a small bowl, whisk together all ingredients. Taste, season, keep cold until needed.
2. Next, make the burgers. Combine turkey, zucchini, carrot, garlic, thyme, and the onion.
3. In a small bowl, whisk the egg, salt, and pepper. Drizzle into turkey mixture. Mix until just combined. Form into 4 patties.
4. Cook in skillet with olive oil until cooked through. Transfer to English muffins. Top with sliced tomatoes and sauce