2 lb. ground beef
1 egg to mix
Seasoned bread crumbs
1 sm. can sliced mushrooms
1 pkg. Provolone sliced cheese (leave for last)
Splash of milk to mix

Mix above items (except for cheese). Oil pan. Spread half of mixture in pan. Make large indentation in center so edges come up. Place all the slices of the Provolone cheese in center - spreading them so all the indentation is covered.

Top with the rest of the meat mixture. Bake at 350 degrees for 1 to 1 1/2 hours.