There are two main ways to tell that your bacon wrapped jalapeno poppers are finished. The first way is to look at the bacon. Your bacon will become darker in color and should be a tad bit crispy. Your bacon does not need to brown since it will continue to crisp up as it cools. Another way to tell that your poppers are finished is to look at the cream cheese filling. Your filling will begin to brown slightly when the poppers are ready to come out of the oven.