1 lb. lean ground beef
1 c. fresh bread crumbs, blender made
1/2 c. chopped onions
1 egg, beaten
1/4 c. milk
1 tsp. prepared mustard
1 tsp. salt
1/4 tsp. pepper
1 pkg. (1 lb.) frozen French fries

Mix all ingredients except French fries. Arrange half the potatoes evenly in 8 inch square pan. Spoon meat mixture over potatoes; pat evenly over potatoes. Press remaining potatoes over meat mixture. Bake at 400 degrees for 35-40 minutes, until meat is cooked and potatoes are brown. Let stand 5-10 minutes. Cut into squares to serve. 6 servings.