Cook the pasta in salted water according to the instructions on the package (attention: we will need some of the pasta water for the pesto later!)
Fry the onion in olive oil (use a large pan, some must fit in there), cut the red cabbage into fine strips and fry with a little salt for about 20 - 30 minutes.
Meanwhile, puree the nuts, lemon juice, garlic and honey with a few tablespoons of the pasta water to a creamy mass. Grate the parmesan and mix into the pesto. Season to taste with salt and pepper.
Add cumin to the red cabbage (about 1/2 teaspoon) and cook for a short time. Fold the drained pasta and pesto into the red cabbage.
The two of us eat a small red cabbage, but that is also a really big portion!