Festive Macaroni Salad

Ingredients

• 1/4 cup minced red onion
• 1 tbsp whole-grain mustard
• 2 cups mayonnaise
• 1/4 tsp freshly ground black pepper
• 1 16 oz package frozen peas, thawed
• 1 cup diced cooked ham
• 1/4 cup chopped fresh dill
• 1/4 cup chopped fresh parsley
• 16 oz fusilli pasta
• 1 tbsp freshly squeezed lemon juice
• 1/2 tsp celery salt
• 8 oz sharp cheddar cheese, cubed