Round sour dough bread or shepherd's bread (order uncut)

Mix large jar Cheez Whiz and 1 large package Philadelphia cream cheese and 2 cans crab or shrimp, drained. Cut top off bread (close to top, 1 inch down, cut up also). Break inside into bite-size pieces. Put mixture in bread. Bake at 350 degrees for 1/2 hour. The last 5 minutes put crumbs on cookie sheets.