The phrase "cooker apple" refers to an apple variety that is best suited for cooking or baking. It is not ideal for eating fresh but works well when used in recipes or for making pies, sauces, or other cooked dishes. Full definition
The best thing is this easy to make slow cooker apple butter recipe is to die for; and will cook while you're getting work or gardening done. (imperfectlyhappy.com)
Make a batch of this slow cooker apple butter to share, but keep some for yourself as well. (dineanddish.net)
In large skillet, cook apples in remaining 1 tablespoon butter until tender - crisp. (easydessert.org)