http://voices.washingtonpost.com/mighty-appetite/2006/06/my_friend_the_garlic_scape_1.html
Garlic Scape Pesto
Ingredients: 1 cup garlic scapes (about 8 or 9 scapes), top flowery part removed, cut into ¼-inch slices 1/3 cup walnuts ¾ cup olive oil ¼-1/2 cup grated parmigiano ½ teaspoon salt black pepper to taste
Method: Place scapes and walnuts in the bowl of a food processor and whiz until well combined and somewhat smooth. Slowly drizzle in oil and process until integrated. With a rubber spatula, scoop pesto out of bowl and into a mixing bowl. Add parmigiano to taste; add salt and pepper. Makes about 6 ounces of pesto. Keeps for up to one week in an air-tight container in the refrigerator.
For ½ pound short pasta such as penne, add about 2 tablespoons of pesto to cooked pasta and stir until pasta is well coated.