Preheat the oven to 400 degrees F. Line a 12 cup muffin pan with paper liners. Set aside.
In a large bowl, using a hand mixer to beat together the melted butter with sugar, about 1 minute. Add in eggs and almond extract and beat until just combined.
In another bowl, add the flour, pistachio pudding mix, baking powder, and salt. Whisk to combine.