This really depends on you. Jalapeno poppers can range from not spicy at all, to tear-jerking depending on how they are prepared. First, choose the right peppers. Jalapenos with stripes tend to be spicier than solid colored jalapenos. If you want to keep your poppers mild, be sure to devein the pepper and scoop the seeds out. You can take this a step further by rinsing with water and patting the pepper dry if you want to eliminate spiciness.