Mushroom Steak Burgers

Friday was Mushroom Steak Burgers. Before making and cooking the burgers the prep work is to peel and cut the mushrooms and the onions. I used about 3 pounds of mushrooms and 3 large onions. Cook the mushrooms in 4 sticks of butter until tender. Take the mushrooms out of the butter and set aside. Now cook the onions in the mushroom butter until translucent. Put in bowl and set aside.  Now make the burgers and brown on both sides. I used the 96/4 mix so there would be no greasy fat involved.  I always make half pound burgers for these and always do 8 because it fits perfect in my baking dish. Once browned, place in the baking dish. Top with the mushrooms followed by the onions. Spoon the remaining butter on each burger with the onions. Next I used half a package (professional size) of Minors beef gravy mix to make 2 quarts of beef gravy. Pour that over and around the burgers evenly. Bake at 325 for 45 minutes to an hour. This will allow the meat to finish cooking and the gravy to mix with the mushroom and onion flavor.  Bon Appétit!