For the Schupfnudeln with pesto, fry Schupfnudeln in olive oil until brown all over. Meanwhile, cut onions into rings and halve or quarter cocktail tomatoes, depending on size.
Reduce heat, add onions to Schupfnudeln and sauté until translucent. Sauté tomatoes for 1 minute, stir in pesto and season with salt and pepper.
Serve the Schupfnudeln with pesto best with a crisp salad.