Mostaccioli Salad

Ingredients

• 1 lb. box mostaccioli, cook and drain
• 1 1/2 c. vinegar
• 1 1/2 c. sugar
• 2 Tbsp. dry mustard
• 1 tsp. garlic powder
• 1 tsp. salt
• 1 tsp. pepper
• 1 tsp. chopped parsley
• 1 medium onion, sliced
• 1 medium cucumber, sliced