This is not my idea so I cant take credit for it, also, I have not tried it so I can not vouch for the taste but here goes:
Take your natural peanut butter and poor out the oil (before stirring) refill w/ flax and stir it up as you would - refrigerate and enjoy.
I saw it on another message board and the guy said it covers the flax taste and maintains the peanut taste but who knows.
I opt for this method:
Step 1: Fill tbls
Step 2: proceed to put in mouth
Step 3: swallow it quick
Step 4: repeat