Cut the slit deep enough to slice through to the seeds in the center of the pepper. Use the paring knife to cut a small horizontal slit near the stem.
[header] How to make jalapeno poppers [title] Slice 12 jalapenos lengthwise and near the stem end. [step] Rinse the jalapenos and dry them with a towel. Use a small paring knife to cut a long slit from the stem to the end of each pepper.