In a small skillet melt butter over medium heat.
Add in shallot and garlic, saute until shallots are translucent.
Add in mushrooms, cooking for 2-3 minutes until tender.
In a large bowl combine turkey, bread crumbs, cheese, vegetable mixture, egg, and salt and pepper.
Mix well with your hands.
Form burger patties with about 3 ounce of meat (you should get about 5 burgers).
In a large skillet heat olive oil over medium high heat.
Cook turkey burger, slipping every few minutes until well done.
Serve turkey burger as desired on a hamburger bun, roll, or lettuce for a lower carb option.