- 1 (10 ounce) package frozen peas, thawed and drained
- 2 cups cubed fully cooked ham
- 1 cup shredded Cheddar cheese
- 3/4 cup mayonnaise
- 2 tablespoons onion, chopped
- 1 1/2 teaspoons mustard
- Mix peas, ham, Cheddar cheese, mayonnaise, onion, and Dijon mustard in a large bowl. Cover and refrigerate at least 2 hours before serving.