In a frying pan, melt the butter
Add the onions, mushrooms, salt and pepper to the pan.
Saute for 5 minutes or until mushrooms have absorbed the liquid and appear soft.
Add the mushroom soup and parsley.
Stir to combine.
Add the Worcestershire, sour cream and sherry.
Stir until combined, and it starts to bubble.
Add the Swiss cheese.
Add the chicken, salt and pepper. Cook until hot.
Spray a 9x13-inch casserole dish with cooking spray.
On a plate or flat surface lay out the Crepini.
Fill each Crepini with a couple of large tablespoons of the filling.
Add two asparagus spears on top of the filling.
Roll up and place in the casserole dish. Repeat with the remaining Crepini to fill the casserole dish.
Spoon the rest of the filling over the top of the crepes in the casserole dish and sprinkle with extra Swiss cheese.
Bake in the oven at 350 degrees until cheese is melted, and the crepes are heated through about 20 minutes.