Easy Mostaccioli Salad

Bring a large pot of lightly salted water to a boil. Add penne and food coloring to the boiling water and cook, stirring occasionally, until pasta is tender yet firm to the bite, about 11 minutes. Rinse and drain pasta.

Combine cucumber, onion, vinegar, sugar, parsley, garlic salt, salt, pepper, MSG, and mustard in a blender; blend until smooth.

Place pasta in a large bowl. Add oil and toss to coat, then toss with cucumber-onion dressing. Refrigerate 8 hours to overnight.

Stir before serving.