Popsugar Lifestyle Jalapeno Poppers How to Make Jalapeno Poppers How to Prep Peppers For Jalapeño Poppers 16 May, 2018 by Susannah Chen View On One Page Photo 1 of 5 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Step 1: Slice through half the chile lengthwise. Start with washed and dried jalapeños. Lay them down in a steady position first so they don't start rolling, then use a paring knife to make a slit halfway through the pepper from stem to tip. Previous Next Start Slideshow Jalapeno PoppersJalapenosCooking TechniquesFood How-ToKnife SkillsCooking Basics