Place the walnuts, pine nuts and garlic in a food processor and pulse until finely chopped.
Place a large skillet over medium heat and add in the olive oil. Once oil heats, add in the kohlrabi noodles and cook for 2 minutes or until they begin to soften. Then, add in the oregano, pulsed nut mixture, raisins and season with salt and pepper. Cook for 3-5 minutes, stirring constantly to avoid burning the nuts but just enough to fully cook the kohlrabi.
Serve into bowls.
Adapted from Food52 recipe - http://food52.com/recipes/19102-edward-giobbi-s-spaghetti-alla-foriana