Line 1-2 large baking sheets with parchment paper.
STOVE TOP:
Place all the chocolate into a heavy-based pot or pan over low heat.
Cook, stirring occasionally, until melted and smooth (approximately 10-15 minutes).
Let the mixture cool for 5 minutes, then stir in the nuts.
Use a cookie scoop or metal spoon to drop the mixture into rounds onto the prepared baking sheets.
Refrigerate until set, which takes about 1 hour.
SLOW COOKER:
Spray a 6-quart (6-liter) slow cooker bowl with nonstick oil spray or use a liner.
Combine all the ingredients in the slow cooker, cover, and cook on low for 1-2 hours or until the chocolate is completely melted. Stir occasionally (every 20-30 minutes) to avoid burning the chocolate on the bottom of the cooker bowl.
Give the mixture a good stir to combine.
Use a cookie scoop or metal spoon to drop the mixture into rounds onto the prepared baking sheets.
Refrigerate until set, approximately 1 hour.
Notes
Store in an airtight container in the refrigerator for a duration of up to 1 month, or alternatively, freeze for a maximum of 2 months.