Poke sweet potato with a fork in multiple places. Cook sweet potato in microwave for 5-8 minutes, until fork easily pierces through skin. Allow sweet potato to cool for 3-4 minutes.
Cut into potato skin and use a fork or spoon to get the cooked sweet potato out of the skin. Place into medium size bowl and combine with remaining ingredients.
Form 6 patties that are roughly the same diameter as your hamburger buns. Patties should be about an inch thick. Place onto a plate.
Heat grill pan, skillet or grill to medium heat. Cook turkey patties for 3-4 minutes on each side (adding a slice of cheese on each patty for last minute) , until internal temperature reaches 165 degrees.
Serve on onion bun and add desired condiments!
Notes
Nutritional information includes a bun and slice of muenster cheese (as pictured)