Heat half of the butter in a cast iron pan, as it begins to foam add your green onions, garlic, and mushrooms. Brown them together.
Mix together the other half of the butter, with the breadcrumbs, and the cheese. Set aside.
Deglaze your pan with the white wine and reduce, until you have a nice brown amber color to your mixture.
Now add your shrimp, fan them out into a circle.
Top the whole thing with your breadcrumb mixture. Bake in the oven for 20 minutes at 375F, serve when the crust is golden brown and the shrimp is cooked. Be careful not to overcook the shrimp.