Brown the ground turkey in a skillet over medium-high heat
Add garlic powder, onion powder, black pepper, and salt to the meat
Cook the seasoned meat together until combined
Reduce heat and add ½ cup of milk to the mixture
Add 1 cup of sharp cheddar cheese and stir until melted and well combined
Grease a casserole dish
Place 6 burger buns in the casserole dish and remove the top buns
Scoop the cheeseburger mixture onto the bottom buns
Place a slice of cheese on top of each portion
Replace the top buns
Brush melted butter on top of all the buns
Bake in a 350°F oven for about 8 minutes until golden and heated through
Remove from oven and serve
