CRUNCHY PEANUT BUTTER CUPS

I saw these on Pinterest and I HAD to try them. They were pretty easy to make and pretty tasty. I changed it however to make it my own and to make what I think better.
Crunchy Peanut Butter Cups

1/4 Cup Butter
3/4 Cup Natural Peanut Butter Cups
3/4 Cup Graham Cracker Crumbs
1/4 Cup Icing Sugar
1/4 Cup Milk
1 Cup Milk Chocolate Chips or Semi Sweet Chocolate Chips
Sea Salt

Line mini muffin tins with papers
Microwave Peanut Butter and Butter for 45 seconds. Stir until
smooth.
Add Graham and Sugar, combine with the Peanut Butter mixture.
Fill cups half full with Peanut Butter mixture. Chill in fridge for 15 minutes.
When cups are chilled, microwave chocolate and milk for 25 seconds. Melt until just smooth, you may have mic it for a few more seconds.
Spoon chocolate over each cup. Sprinkle with Sea Salt and chill.
Makes Approx. 30-34 Cups.
Note : I added salt to some it tastes good either way.