Melt butter in a large non-stick frying pan over medium-high heat.
Add pecans and Swerve to the frying pan and mix until combined with melted butter.
Cook, stirring every 30 seconds, until Swerve is melted and evenly coats the pecans (3-4 minutes). (Watch the pecans closely as they can burn very quickly).
Transfer keto candied pecans from a frying pan to the parchment paper. Spread them on parchment paper in a single layer so they are not touching.
Let the keto candied pecans cool completely on parchment paper, then transfer to a serving dish.