Preheat oven to 350°F (175°C). Line a muffin tin with paper liners.
In a medium bowl, whisk together flour, sugar, baking powder, baking soda, and salt.
In a large bowl, cream together butter and sugar until light and fluffy. Beat in eggs one at a time, then stir in rose extract.
Gradually add the dry ingredients to the wet ingredients, alternating with the milk, beginning and ending with the dry ingredients. Mix until just combined.
Fold in the chopped pistachios.
Fill the muffin liners about 2/3 full.
Bake for 20-25 minutes, or until a toothpick inserted into the center comes out clean.
Let cool in the muffin tin for a few minutes before transferring to a wire rack to cool completely.
Notes
These cupcakes are best served fresh. Store leftovers in an airtight container at room temperature for up to 3 days.