There are several options for local blue cheeses - pick something moderately crumbly and flavorful but not extremely pungent (or just pick whatever you like best!). It pairs well with arugula's peppery flavor. If you want to give this dish more heft, toss in some cooked chicken or beans.
1 lb pasta of your choice
1 cup buttermilk
3-4 oz. blue cheese, crumbled
Salt and pepper to taste
1/3 lb arugula, washed and chopped
1 1/2 cups walnut pieces, lightly toasted
Cook the pasta in a large pot of boiling salted water. When done, drain and toss with a little canola oil.
While the pasta cooks, combine the buttermilk and blue cheese in the blender. Or, if you prefer, mash the cheese into the buttermilk with a fork for a chunkier consistency. Add salt and pepper to taste.
When the pasta is done, immediately toss it with the arugula in a large bowl. The arugula should wilt partially to completely. Pour in the buttermilk sauce. Taste and adjust salt and pepper if needed.
Serve hot, passing toasted walnuts at the table for topping.