Step 1

Line 2 baking sheets with wax or parchment paper.

Step 2

Melt the butter in a 3 1/2-quart saucepan over medium heat. Stir in the sugar and milk and bring to a boil; boil for 1 1/2 minutes.

Step 3

Remove from the heat and immediately stir in the oats, peanut butter, vanilla and salt, stirring to combine. Add the chocolate, stirring until just combined.

Step 4

Drop the dough by rounded tablespoonfuls on the prepared baking sheets. Let the cookies stand until set, about 30 minutes.