Steps
1. Cook pasta according to package instructions.
2. In a pan, sauté chopped onion until translucent.
3. Add diced tomatoes and cook until soft.
4. Stir in Schezwan sauce and simmer for a few minutes.
5. Squeeze in lemon juice and season with salt and pepper.
6. Toss cooked pasta in the sauce.
7. Garnish with fresh parsley before serving.