Easy Macaroni Salad
["1 c. mayonnaise", "3 Tbsp. vinegar", "2 Tbsp. sugar", "2 Tbsp. prepared mustard", "1 tsp. salt", "1/4 tsp. pepper", "1 (8 oz.) pkg. elbow macaroni, cooked and drained", "1 c. sliced celery", "1 c. chopped green or sweet red pepper", "1/4 c. chopped onion"]
["In a large bowl, stir together the first 6 ingredients until smooth.", "Add remaining ingredients; toss to coat well.", "Cover; chill.", "Makes 5 cups."]
["mayonnaise", "vinegar", "sugar", "mustard", "salt", "pepper", "elbow macaroni", "celery", "pepper", "onion"]