How to Make It
Heat oil in a large nonstick skillet over medium-high. Add turkey; cook 6 minutes or until browned, stirring to crumble. Add kale, onion, thyme, garlic powder, and mushrooms; cook 6 minutes, stirring occasionally.
Whisk together milk and flour. Add milk mixture to pan; bring to a boil. Reduce heat to medium-low, and simmer 5 minutes or until thickened. Remove pan from heat; stir in cheese, pepper, and salt. Spoon about 3/4 cup turkey mixture onto each bun.