01 -
Turn your oven to 350°F (175°C) and get a few baking sheets lined with parchment paper.
02 -
Whip the butter and sugar in a big bowl using an electric mixer for 2-3 minutes until the mixture turns fluffy and light. Beat in the egg and vanilla until everything's smooth.
03 -
In another bowl, stir together the salt, ground pistachios, and flour. Add this dry mix to the butter mixture gradually, using the lowest mixer speed, and stop when combined. Don’t overdo it!
04 -
Cover the dough and stick it in the fridge for at least an hour until it firms up.
05 -
Form 1-inch balls of dough with your hands and place them on your baking sheets, leaving 2 inches between each. Press down lightly with your hand. Bake for 10-12 minutes, or until you see golden edges. Leave them on the baking sheets for 5 minutes to cool, then cool completely on wire racks.
06 -
Let the vanilla ice cream sit on the counter for 5-10 minutes to soften a little. Put the chopped pistachios into a shallow bowl.
07 -
Pair up cookies that are similar in size. Scoop about 2 tablespoons of ice cream onto the flat side of one cookie, then gently press the flat side of the second cookie onto the ice cream until it spreads to the edge.
08 -
Roll the edges of the sandwiches in the chopped pistachios right away, applying light pressure so they stick.
09 -
Pop your sandwiches onto a baking sheet and freeze them for 1-2 hours until solid. If you’re saving them for later, wrap each in plastic wrap.