How to Make Jalapeño Peanut Brittle Prep the Pan: Line a 9×13-inch baking dish with parchment paper and set aside. Chop the Peppers: Remove stems and seeds from your jalapeños, then dice finely.

If the batter's too thick, the brittle turns out to be more like a wafer-thin brownie; not bad, just not brittle. My first attempt turned out insufficiently sweet, so I increased the stevia by 50% ...