2. chop 3 tablespoons pistachios in a
food processor until finely ground. add butter, confectioners' sugar,
almond extract and salt. process until combined.
3. place nectarines, cut side up, on a baking sheet, and squeeze
lemon over top. place a generous tablespoon of pistachio mixture on
each nectarine half. chop remaining tablespoon pistachios, and sprinkle
on top.
4. bake until fruit is tender and topping is crisp, 10 to 15
minutes. let cool for 5 minutes. transfer to 4 plates.
5. whisk together creme fraiche and granulated sugar. spoon over nectarines, and serve.