I had a bunch of mint I didn't want to waste and I found this recipe. It was great over quick pan fried fish.

1/4 cup (packed) fresh mint leaves
1/4 cup lightly toasted shelled unsalted natural pistachios
1/4 cup extra-virgin olive oil
1 garlic clove, peeled
Coarse kosher salt

Blend mint leaves, pistachios, olive oil, and garlic in processor until coarse puree forms. Season with coarse salt. DO AHEAD Can be made 1 day ahead. Cover and chill. Bring pesto to room temperature and stir before using.