These cookies are a whole new ballgame of baking — with kettle-cooked potato chips, milk balls, and butterscotch morsels mixed in. Each bite of sweet, salty, and chocolaty flavors will have you going back for more of that junk.
Sift together the flour and baking soda.
Using an electric mixer fitted with the paddle attachment, beat the butter on medium speed for about 3 minutes, until soft and smooth. Add the brown sugar, granulated sugar, and salt and beat on medium-high speed for 5 minutes, until light and fluffy. Scrape down the sides of the bowl.
Add the egg and vanilla and beat for 1-2 minutes, until just blended. Add the flour mixture and beat on low speed until just combined. Do not overmix.
Using a rubber spatula, scrape down the sides of the bowl. Add the chocolate, potato chips, pretzels, butterscotch morsels, malted milk balls, and peanuts. Stir until just blended. Don’t be concerned if it seems like there is more junk than cookie dough. Using a 3-tablespoon ice cream scoop, shape the dough into balls and arrange them close together on a large plate or small baking sheet.
Cover and refrigerate for at least 1 hour, until well chilled. The dough can also be covered and refrigerated overnight, or up to 2 days before baking. Reminder: Cold dough bakes better.
Position the oven racks in the upper middle and lower middle of the oven, and preheat the oven to 350 degrees (335 degrees if using a convection oven). Line 2 baking sheets with parchment paper or nonstick liners. Arrange the chilled dough balls about 2 inches apart on the prepared baking sheets. Using the palm of your hand, flatten each dough ball slightly. Sprinkle the tops with a little sea salt.
Bake for 11-13 minutes, switching the baking sheets’ positions halfway through baking, until light golden brown. I think these cookies are at their best when slightly underbaked and the chocolate looks oozy and gooey. Transfer the baking sheets to wire racks and let the cookies cool completely. Store in an airtight container for up to 5 days and reheat before serving.