In 2 sauce pans, melt each type of chocolate separately on low heat.
While you're waiting, start putting peanut butter on each cracker to make 'sandwiches.'
When you have melted the chocolate to desired consistency, start dipping each sandwich into the chocolate. You can do some in the regular chocolate and some in the white chocolate.
[Hint] If you need to make the chocolate runnier, stir in some crisco.
After you dip all the crackers, you can take the opposite type of chocolate and drizzle it over for decoration.
Allow them to harden on wax paper.
Recipe by A Camera and A Cookbook at https://acameraandacookbook.com/chocolate-covered-peanut-butter-crackers/