Ingredients

2 medium heads garlic 

1 1/4 ounces almonds, toasted and roughly chopped (1/4 cup) 

3 tablespoons extra-virgin olive oil 

1 ounce Pecorino-Romano cheese, grated (1/3 cup) 

1/2 large bunch mustard greens, stems discarded, roughly chopped (4 cups) 

Coarse salt and freshly ground pepper 

Preparation

Preheat oven to 375 degrees. Wrap garlic in foil, and roast until flesh is completely tender, about 1 hour. Let cool completely. Squeeze garlic from skins, discarding skins.

Pulse garlic, almonds, oil, cheese, mustard greens, 1/4 teaspoon salt, pepper to taste, and 2 tablespoons water in a food processor until a thick paste forms. Pesto can be refrigerated up to 3 days.