Force some pawn trades to open up some files. Trade off everything. End up with K & 2P vs K.
Easier said than done because white is going to resist trading down. 
Push your b pawn, and you can trade white's c pawn. After that, clear enough away that you can force d. After white blockades that, look for another place where you can trade away and create a passed pawn. White will be able to defend on one front. Once you stop making progress there, open another.
Accepted a draw because I had a work call beginning soon. Black to move. What's best strategy for winning here?
Keep wedging!
Move your Rooks in front of the Pawns and beside them, and try to take out the Pawns at the far back!
Thanks for the ideas. I know it’s a winning position, but tough to imagine without practice for a someone who hasn’t played in 40 years
Probably to get checkmate faster then your opponent.
but actually lol everyone else summed it up pretty well.
Stockfish likes getting ready to open the hfile (but not necessarily actually opening it right away) before trying for a past pawn. There is plenty of time to make the past central pawn - white can't really prevent it. And the hfile can have a restraining effect on white. That said, I'm sure there are multiple ways to skin this cat and messing around with the hfile is probably unnecessary.
Accepted a draw because I had a work call beginning soon. Black to move. What's best strategy for winning here?
https://www.chess.com/live/game/6225039065