Here's a delicious way to slow cook abalone for part of a mezzo platter - a riff on unusual recipe I found in Stephanie Alexander's The Cook's Companion.
1 stick celery
2 bay leaves
Cumin seeds (whole)
Place your abalone steaks in a slow cooker with all of the ingredients and immerse in olive oil. You can weight them down with a plate so the oil covers them completely. Cook on low for 4-6 hours, strain the oil, discard the veggies and refrigerate the abalone covered in the oil. Then slice them, add fresh parsley, squeeze with lemon juice, and serve as part of a mezze platter!