This tasty appetizer seasoned with thyme, oregano, and savory. Choose good sized mushrooms, about 2 inches across. When cleaning mushrooms, don't run them under water. They are like little sponges, and will absorb it; just wipe them clean with a damp towel. The filling can be made with fresh, canned, or imitation crabmeat. If using canned, be sure to rinse it first.