How to Core and Slice a Pineapple By Kitchen Crew 7/22/16 Share on Facebook Share on Pinterest Share on Twitter Email to a Friend Coring and slicing a pineapple is super easy. Step 1. Cut bottom and top off pineapple with a sharp knife. Step 2. Carefully cut the skin off the pineapple. Step 3. Cutting around the core, slice chunks off the pineapple. Watch the "pinch tips" video here.