Season the cubed elk steak with garlic powder, salt and pepper. Heat a skillet over medium heat and add the oil. Sear the elk quickly until golden brown but leave slightly under cooked. Remove and set aside to cool.
Preheat the oven to 400 degrees.
Working with one pastry sheet at a time, roll one sheet out and cut into 12 individual squares. Add a small amount of cheese to the center of each square, add a piece of elk and then set a slice of the prosciutto on the top. Wet the outter edges of the pastry squares with a little water. Pull all four corners of the pastry up over the top of the filling and pinch to enclose each packet. Set the seam side down on a non stick baking sheet and brush the tops with the butter. Repeat until done.
Bake for 20 minutes or until golden brown. Remove from oven and serve.
Notes
NOTE: These Wild Game Wellington Appetizers can also be dished up using venison, pronghorn antelope, bighorn sheep or bison.