Easy Egg Salad

1 dozen hard boiled eggs (Peeled and diced))
1 cup mayonnaise
2 tbsp yellow mustard
1 1/2 tsp onion salt
3/4 cup diced onions
Fresh ground black pepper and salt to taste

In large bowl, combine all ingredients except pepper and salt. Stir until well combined.  Add salt and pepper to taste.
Enjoy!